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Finding the Fourth Proportional to 492,767.70, 739,151.55 and 431,750.40

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Solution

The fourth proportional to 492,767.70, 739,151.55 and 431,750.40 is: 647,625.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,767.70 : 739,151.55 = 431,750.40 : x
  2. Step 2: Convert to fraction form
    492,767.70/739,151.55 = 431,750.40/x
  3. Step 3: Cross multiply
    492,767.70x = 739,151.55 × 431,750.40
  4. Step 4: Simplify right side
    492,767.70x = 319,128,977,373.12
  5. Step 5: Solve for x
    x = 319,128,977,373.12/492,767.70
  6. Step 6: Final answer
    x = 647,625.60

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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.