Home / 748,854.40-1,123,286.40-299,612.80

Finding the Fourth Proportional to 748,854.40, 1,123,286.40 and 299,612.80

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Solution

The fourth proportional to 748,854.40, 1,123,286.40 and 299,612.80 is: 449,421.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,854.40 : 1,123,286.40 = 299,612.80 : x
  2. Step 2: Convert to fraction form
    748,854.40/1,123,286.40 = 299,612.80/x
  3. Step 3: Cross multiply
    748,854.40x = 1,123,286.40 × 299,612.80
  4. Step 4: Simplify right side
    748,854.40x = 336,550,983,505.92
  5. Step 5: Solve for x
    x = 336,550,983,505.92/748,854.40
  6. Step 6: Final answer
    x = 449,421.12

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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.