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Finding the Fourth Proportional to 529,368.93, 730,527.71 and 287,651.49

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Solution

The fourth proportional to 529,368.93, 730,527.71 and 287,651.49 is: 396,958.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,368.93 : 730,527.71 = 287,651.49 : x
  2. Step 2: Convert to fraction form
    529,368.93/730,527.71 = 287,651.49/x
  3. Step 3: Cross multiply
    529,368.93x = 730,527.71 × 287,651.49
  4. Step 4: Simplify right side
    529,368.93x = 210,137,382,829.53
  5. Step 5: Solve for x
    x = 210,137,382,829.53/529,368.93
  6. Step 6: Final answer
    x = 396,958.29

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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.