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Finding the Fourth Proportional to 528,925.14, 729,897.82 and 287,202.71

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Solution

The fourth proportional to 528,925.14, 729,897.82 and 287,202.71 is: 396,329.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,925.14 : 729,897.82 = 287,202.71 : x
  2. Step 2: Convert to fraction form
    528,925.14/729,897.82 = 287,202.71/x
  3. Step 3: Cross multiply
    528,925.14x = 729,897.82 × 287,202.71
  4. Step 4: Simplify right side
    528,925.14x = 209,628,626,841.59
  5. Step 5: Solve for x
    x = 209,628,626,841.59/528,925.14
  6. Step 6: Final answer
    x = 396,329.49

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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.