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Finding the Fourth Proportional to 709,542.56, 1,063,389.72 and 288,326

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Solution

The fourth proportional to 709,542.56, 1,063,389.72 and 288,326 is: 432,113.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,542.56 : 1,063,389.72 = 288,326 : x
  2. Step 2: Convert to fraction form
    709,542.56/1,063,389.72 = 288,326/x
  3. Step 3: Cross multiply
    709,542.56x = 1,063,389.72 × 288,326
  4. Step 4: Simplify right side
    709,542.56x = 306,602,904,408.72
  5. Step 5: Solve for x
    x = 306,602,904,408.72/709,542.56
  6. Step 6: Final answer
    x = 432,113.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.