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Finding the Fourth Proportional to 720,772.52, 994,726.02 and 419,025.32

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Solution

The fourth proportional to 720,772.52, 994,726.02 and 419,025.32 is: 578,289.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,772.52 : 994,726.02 = 419,025.32 : x
  2. Step 2: Convert to fraction form
    720,772.52/994,726.02 = 419,025.32/x
  3. Step 3: Cross multiply
    720,772.52x = 994,726.02 × 419,025.32
  4. Step 4: Simplify right side
    720,772.52x = 416,815,388,842.83
  5. Step 5: Solve for x
    x = 416,815,388,842.83/720,772.52
  6. Step 6: Final answer
    x = 578,289.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.