Home / 748,901.90-1,123,357.65-299,660.30

Finding the Fourth Proportional to 748,901.90, 1,123,357.65 and 299,660.30

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Solution

The fourth proportional to 748,901.90, 1,123,357.65 and 299,660.30 is: 449,492.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,901.90 : 1,123,357.65 = 299,660.30 : x
  2. Step 2: Convert to fraction form
    748,901.90/1,123,357.65 = 299,660.30/x
  3. Step 3: Cross multiply
    748,901.90x = 1,123,357.65 × 299,660.30
  4. Step 4: Simplify right side
    748,901.90x = 336,625,690,406.30
  5. Step 5: Solve for x
    x = 336,625,690,406.30/748,901.90
  6. Step 6: Final answer
    x = 449,492.37

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Double scale
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Similar ratio
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1.5x scale

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.