Home / 748,930.80-1,123,396.20-538,978.80

Finding the Fourth Proportional to 748,930.80, 1,123,396.20 and 538,978.80

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Solution

The fourth proportional to 748,930.80, 1,123,396.20 and 538,978.80 is: 808,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,930.80 : 1,123,396.20 = 538,978.80 : x
  2. Step 2: Convert to fraction form
    748,930.80/1,123,396.20 = 538,978.80/x
  3. Step 3: Cross multiply
    748,930.80x = 1,123,396.20 × 538,978.80
  4. Step 4: Simplify right side
    748,930.80x = 605,486,735,800.56
  5. Step 5: Solve for x
    x = 605,486,735,800.56/748,930.80
  6. Step 6: Final answer
    x = 808,468.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.