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Finding the Fourth Proportional to 689,058.38, 951,160.38 and 402,671.54

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Solution

The fourth proportional to 689,058.38, 951,160.38 and 402,671.54 is: 555,838.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,058.38 : 951,160.38 = 402,671.54 : x
  2. Step 2: Convert to fraction form
    689,058.38/951,160.38 = 402,671.54/x
  3. Step 3: Cross multiply
    689,058.38x = 951,160.38 × 402,671.54
  4. Step 4: Simplify right side
    689,058.38x = 383,005,215,001.59
  5. Step 5: Solve for x
    x = 383,005,215,001.59/689,058.38
  6. Step 6: Final answer
    x = 555,838.56

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Double scale
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1.5x scale

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.