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Finding the Fourth Proportional to 424,726.26, 636,342.06 and 399,441.30

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Solution

The fourth proportional to 424,726.26, 636,342.06 and 399,441.30 is: 598,459.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,726.26 : 636,342.06 = 399,441.30 : x
  2. Step 2: Convert to fraction form
    424,726.26/636,342.06 = 399,441.30/x
  3. Step 3: Cross multiply
    424,726.26x = 636,342.06 × 399,441.30
  4. Step 4: Simplify right side
    424,726.26x = 254,181,299,691.08
  5. Step 5: Solve for x
    x = 254,181,299,691.08/424,726.26
  6. Step 6: Final answer
    x = 598,459.11

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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.