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Finding the Fourth Proportional to 485,426.10, 728,139.15 and 464,949.30

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Solution

The fourth proportional to 485,426.10, 728,139.15 and 464,949.30 is: 697,423.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,426.10 : 728,139.15 = 464,949.30 : x
  2. Step 2: Convert to fraction form
    485,426.10/728,139.15 = 464,949.30/x
  3. Step 3: Cross multiply
    485,426.10x = 728,139.15 × 464,949.30
  4. Step 4: Simplify right side
    485,426.10x = 338,547,788,095.10
  5. Step 5: Solve for x
    x = 338,547,788,095.10/485,426.10
  6. Step 6: Final answer
    x = 697,423.95

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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.