Home / 1,031,619,867.40-1,547,429,801.10-664,287,848.20

Finding the Fourth Proportional to 1,031,619,867.40, 1,547,429,801.10 and 664,287,848.20

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Solution

The fourth proportional to 1,031,619,867.40, 1,547,429,801.10 and 664,287,848.20 is: 996,431,772.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031,619,867.40 : 1,547,429,801.10 = 664,287,848.20 : x
  2. Step 2: Convert to fraction form
    1,031,619,867.40/1,547,429,801.10 = 664,287,848.20/x
  3. Step 3: Cross multiply
    1,031,619,867.40x = 1,547,429,801.10 × 664,287,848.20
  4. Step 4: Simplify right side
    1,031,619,867.40x = 1,027,938,812,813,272,960
  5. Step 5: Solve for x
    x = 1,027,938,812,813,272,960/1,031,619,867.40
  6. Step 6: Final answer
    x = 996,431,772.30

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Half scale
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Double scale
Find fourth proportional to 1,031,619,868.40, 1,547,429,802.60 and 664,287,849.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.