Home / 1,249,875.40-1,874,813.10-408,512.20

Finding the Fourth Proportional to 1,249,875.40, 1,874,813.10 and 408,512.20

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Solution

The fourth proportional to 1,249,875.40, 1,874,813.10 and 408,512.20 is: 612,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,875.40 : 1,874,813.10 = 408,512.20 : x
  2. Step 2: Convert to fraction form
    1,249,875.40/1,874,813.10 = 408,512.20/x
  3. Step 3: Cross multiply
    1,249,875.40x = 1,874,813.10 × 408,512.20
  4. Step 4: Simplify right side
    1,249,875.40x = 765,884,024,069.82
  5. Step 5: Solve for x
    x = 765,884,024,069.82/1,249,875.40
  6. Step 6: Final answer
    x = 612,768.30

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Half scale
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Double scale
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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.