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Finding the Fourth Proportional to 616,660.72, 851,128.96 and 374,892

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Solution

The fourth proportional to 616,660.72, 851,128.96 and 374,892 is: 517,434.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,660.72 : 851,128.96 = 374,892 : x
  2. Step 2: Convert to fraction form
    616,660.72/851,128.96 = 374,892/x
  3. Step 3: Cross multiply
    616,660.72x = 851,128.96 × 374,892
  4. Step 4: Simplify right side
    616,660.72x = 319,081,438,072.32
  5. Step 5: Solve for x
    x = 319,081,438,072.32/616,660.72
  6. Step 6: Final answer
    x = 517,434.35

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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.