Home / 728,419.20-1,092,110.40-278,966.40

Finding the Fourth Proportional to 728,419.20, 1,092,110.40 and 278,966.40

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Solution

The fourth proportional to 728,419.20, 1,092,110.40 and 278,966.40 is: 418,251.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,419.20 : 1,092,110.40 = 278,966.40 : x
  2. Step 2: Convert to fraction form
    728,419.20/1,092,110.40 = 278,966.40/x
  3. Step 3: Cross multiply
    728,419.20x = 1,092,110.40 × 278,966.40
  4. Step 4: Simplify right side
    728,419.20x = 304,662,106,690.56
  5. Step 5: Solve for x
    x = 304,662,106,690.56/728,419.20
  6. Step 6: Final answer
    x = 418,251.07

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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.