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Finding the Fourth Proportional to 614,639.10, 922,505.40 and 361,603.20

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Solution

The fourth proportional to 614,639.10, 922,505.40 and 361,603.20 is: 542,726.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,639.10 : 922,505.40 = 361,603.20 : x
  2. Step 2: Convert to fraction form
    614,639.10/922,505.40 = 361,603.20/x
  3. Step 3: Cross multiply
    614,639.10x = 922,505.40 × 361,603.20
  4. Step 4: Simplify right side
    614,639.10x = 333,580,904,657.28
  5. Step 5: Solve for x
    x = 333,580,904,657.28/614,639.10
  6. Step 6: Final answer
    x = 542,726.46

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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.