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Finding the Fourth Proportional to 529,382.59, 730,488.67 and 299,890.71

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Solution

The fourth proportional to 529,382.59, 730,488.67 and 299,890.71 is: 413,815.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,382.59 : 730,488.67 = 299,890.71 : x
  2. Step 2: Convert to fraction form
    529,382.59/730,488.67 = 299,890.71/x
  3. Step 3: Cross multiply
    529,382.59x = 730,488.67 × 299,890.71
  4. Step 4: Simplify right side
    529,382.59x = 219,066,765,143.53
  5. Step 5: Solve for x
    x = 219,066,765,143.53/529,382.59
  6. Step 6: Final answer
    x = 413,815.59

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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.