Home / 1,428,295,371.40-2,142,443,057.10-393,315,992.20

Finding the Fourth Proportional to 1,428,295,371.40, 2,142,443,057.10 and 393,315,992.20

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Solution

The fourth proportional to 1,428,295,371.40, 2,142,443,057.10 and 393,315,992.20 is: 589,973,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,295,371.40 : 2,142,443,057.10 = 393,315,992.20 : x
  2. Step 2: Convert to fraction form
    1,428,295,371.40/2,142,443,057.10 = 393,315,992.20/x
  3. Step 3: Cross multiply
    1,428,295,371.40x = 2,142,443,057.10 × 393,315,992.20
  4. Step 4: Simplify right side
    1,428,295,371.40x = 842,657,116,735,287,680
  5. Step 5: Solve for x
    x = 842,657,116,735,287,680/1,428,295,371.40
  6. Step 6: Final answer
    x = 589,973,988.30

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Double scale
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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.