Home / 874,221.72-1,206,463.20-487,036.92

Finding the Fourth Proportional to 874,221.72, 1,206,463.20 and 487,036.92

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Solution

The fourth proportional to 874,221.72, 1,206,463.20 and 487,036.92 is: 672,131.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,221.72 : 1,206,463.20 = 487,036.92 : x
  2. Step 2: Convert to fraction form
    874,221.72/1,206,463.20 = 487,036.92/x
  3. Step 3: Cross multiply
    874,221.72x = 1,206,463.20 × 487,036.92
  4. Step 4: Simplify right side
    874,221.72x = 587,592,114,989.03
  5. Step 5: Solve for x
    x = 587,592,114,989.03/874,221.72
  6. Step 6: Final answer
    x = 672,131.69

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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.