Home / 903,251.40-1,246,542.11-521,302.78

Finding the Fourth Proportional to 903,251.40, 1,246,542.11 and 521,302.78

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Solution

The fourth proportional to 903,251.40, 1,246,542.11 and 521,302.78 is: 719,429.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,251.40 : 1,246,542.11 = 521,302.78 : x
  2. Step 2: Convert to fraction form
    903,251.40/1,246,542.11 = 521,302.78/x
  3. Step 3: Cross multiply
    903,251.40x = 1,246,542.11 × 521,302.78
  4. Step 4: Simplify right side
    903,251.40x = 649,825,867,330.07
  5. Step 5: Solve for x
    x = 649,825,867,330.07/903,251.40
  6. Step 6: Final answer
    x = 719,429.68

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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.