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Finding the Fourth Proportional to 808,785, 1,116,123.30 and 451,089

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Solution

The fourth proportional to 808,785, 1,116,123.30 and 451,089 is: 622,502.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,785 : 1,116,123.30 = 451,089 : x
  2. Step 2: Convert to fraction form
    808,785/1,116,123.30 = 451,089/x
  3. Step 3: Cross multiply
    808,785x = 1,116,123.30 × 451,089
  4. Step 4: Simplify right side
    808,785x = 503,470,943,273.70
  5. Step 5: Solve for x
    x = 503,470,943,273.70/808,785
  6. Step 6: Final answer
    x = 622,502.82

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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.