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Finding the Fourth Proportional to 458,807.40, 688,211.10 and 450,934.20

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Solution

The fourth proportional to 458,807.40, 688,211.10 and 450,934.20 is: 676,401.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,807.40 : 688,211.10 = 450,934.20 : x
  2. Step 2: Convert to fraction form
    458,807.40/688,211.10 = 450,934.20/x
  3. Step 3: Cross multiply
    458,807.40x = 688,211.10 × 450,934.20
  4. Step 4: Simplify right side
    458,807.40x = 310,337,921,809.62
  5. Step 5: Solve for x
    x = 310,337,921,809.62/458,807.40
  6. Step 6: Final answer
    x = 676,401.30

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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.