Home / 815,536.71-1,125,529.09-493,424.42

Finding the Fourth Proportional to 815,536.71, 1,125,529.09 and 493,424.42

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Solution

The fourth proportional to 815,536.71, 1,125,529.09 and 493,424.42 is: 680,979.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,536.71 : 1,125,529.09 = 493,424.42 : x
  2. Step 2: Convert to fraction form
    815,536.71/1,125,529.09 = 493,424.42/x
  3. Step 3: Cross multiply
    815,536.71x = 1,125,529.09 × 493,424.42
  4. Step 4: Simplify right side
    815,536.71x = 555,363,531,565.17
  5. Step 5: Solve for x
    x = 555,363,531,565.17/815,536.71
  6. Step 6: Final answer
    x = 680,979.19

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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.