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Finding the Fourth Proportional to 610,459.38, 842,487.21 and 355,805.10

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Solution

The fourth proportional to 610,459.38, 842,487.21 and 355,805.10 is: 491,042.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,459.38 : 842,487.21 = 355,805.10 : x
  2. Step 2: Convert to fraction form
    610,459.38/842,487.21 = 355,805.10/x
  3. Step 3: Cross multiply
    610,459.38x = 842,487.21 × 355,805.10
  4. Step 4: Simplify right side
    610,459.38x = 299,761,246,002.77
  5. Step 5: Solve for x
    x = 299,761,246,002.77/610,459.38
  6. Step 6: Final answer
    x = 491,042.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.