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Finding the Fourth Proportional to 495,280.80, 740,952.90 and 429,452.10

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Solution

The fourth proportional to 495,280.80, 740,952.90 and 429,452.10 is: 642,471.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,280.80 : 740,952.90 = 429,452.10 : x
  2. Step 2: Convert to fraction form
    495,280.80/740,952.90 = 429,452.10/x
  3. Step 3: Cross multiply
    495,280.80x = 740,952.90 × 429,452.10
  4. Step 4: Simplify right side
    495,280.80x = 318,203,778,906.09
  5. Step 5: Solve for x
    x = 318,203,778,906.09/495,280.80
  6. Step 6: Final answer
    x = 642,471.46

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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.