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Finding the Fourth Proportional to 424,233.90, 636,350.85 and 407,904.30

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Solution

The fourth proportional to 424,233.90, 636,350.85 and 407,904.30 is: 611,856.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,233.90 : 636,350.85 = 407,904.30 : x
  2. Step 2: Convert to fraction form
    424,233.90/636,350.85 = 407,904.30/x
  3. Step 3: Cross multiply
    424,233.90x = 636,350.85 × 407,904.30
  4. Step 4: Simplify right side
    424,233.90x = 259,570,248,023.66
  5. Step 5: Solve for x
    x = 259,570,248,023.66/424,233.90
  6. Step 6: Final answer
    x = 611,856.45

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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.