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Finding the Fourth Proportional to 613,511.76, 846,516.08 and 387,026

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Solution

The fourth proportional to 613,511.76, 846,516.08 and 387,026 is: 534,013.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,511.76 : 846,516.08 = 387,026 : x
  2. Step 2: Convert to fraction form
    613,511.76/846,516.08 = 387,026/x
  3. Step 3: Cross multiply
    613,511.76x = 846,516.08 × 387,026
  4. Step 4: Simplify right side
    613,511.76x = 327,623,732,378.08
  5. Step 5: Solve for x
    x = 327,623,732,378.08/613,511.76
  6. Step 6: Final answer
    x = 534,013.78

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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.