Home / 728,125.20-1,091,669.40-278,672.40

Finding the Fourth Proportional to 728,125.20, 1,091,669.40 and 278,672.40

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Solution

The fourth proportional to 728,125.20, 1,091,669.40 and 278,672.40 is: 417,810.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,125.20 : 1,091,669.40 = 278,672.40 : x
  2. Step 2: Convert to fraction form
    728,125.20/1,091,669.40 = 278,672.40/x
  3. Step 3: Cross multiply
    728,125.20x = 1,091,669.40 × 278,672.40
  4. Step 4: Simplify right side
    728,125.20x = 304,218,131,704.56
  5. Step 5: Solve for x
    x = 304,218,131,704.56/728,125.20
  6. Step 6: Final answer
    x = 417,810.19

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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.