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Finding the Fourth Proportional to 425,358.77, 587,036.47 and 317,741.97

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Solution

The fourth proportional to 425,358.77, 587,036.47 and 317,741.97 is: 438,514.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,358.77 : 587,036.47 = 317,741.97 : x
  2. Step 2: Convert to fraction form
    425,358.77/587,036.47 = 317,741.97/x
  3. Step 3: Cross multiply
    425,358.77x = 587,036.47 × 317,741.97
  4. Step 4: Simplify right side
    425,358.77x = 186,526,123,645.29
  5. Step 5: Solve for x
    x = 186,526,123,645.29/425,358.77
  6. Step 6: Final answer
    x = 438,514.82

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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.