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Finding the Fourth Proportional to 528,908.40, 729,711.18 and 338,033.52

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Solution

The fourth proportional to 528,908.40, 729,711.18 and 338,033.52 is: 466,369.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,908.40 : 729,711.18 = 338,033.52 : x
  2. Step 2: Convert to fraction form
    528,908.40/729,711.18 = 338,033.52/x
  3. Step 3: Cross multiply
    528,908.40x = 729,711.18 × 338,033.52
  4. Step 4: Simplify right side
    528,908.40x = 246,666,838,758.75
  5. Step 5: Solve for x
    x = 246,666,838,758.75/528,908.40
  6. Step 6: Final answer
    x = 466,369.68

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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.