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Finding the Fourth Proportional to 627,124.12, 865,099.54 and 397,275.88

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Solution

The fourth proportional to 627,124.12, 865,099.54 and 397,275.88 is: 548,030.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,124.12 : 865,099.54 = 397,275.88 : x
  2. Step 2: Convert to fraction form
    627,124.12/865,099.54 = 397,275.88/x
  3. Step 3: Cross multiply
    627,124.12x = 865,099.54 × 397,275.88
  4. Step 4: Simplify right side
    627,124.12x = 343,683,181,041.10
  5. Step 5: Solve for x
    x = 343,683,181,041.10/627,124.12
  6. Step 6: Final answer
    x = 548,030.56

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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.