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Finding the Fourth Proportional to 538,737.65, 742,685.19 and 423,816.55

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Solution

The fourth proportional to 538,737.65, 742,685.19 and 423,816.55 is: 584,258.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,737.65 : 742,685.19 = 423,816.55 : x
  2. Step 2: Convert to fraction form
    538,737.65/742,685.19 = 423,816.55/x
  3. Step 3: Cross multiply
    538,737.65x = 742,685.19 × 423,816.55
  4. Step 4: Simplify right side
    538,737.65x = 314,762,274,961.90
  5. Step 5: Solve for x
    x = 314,762,274,961.90/538,737.65
  6. Step 6: Final answer
    x = 584,258.92

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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.