Home / 918,080.80-1,377,121.20-815,729.20

Finding the Fourth Proportional to 918,080.80, 1,377,121.20 and 815,729.20

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Solution

The fourth proportional to 918,080.80, 1,377,121.20 and 815,729.20 is: 1,223,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,080.80 : 1,377,121.20 = 815,729.20 : x
  2. Step 2: Convert to fraction form
    918,080.80/1,377,121.20 = 815,729.20/x
  3. Step 3: Cross multiply
    918,080.80x = 1,377,121.20 × 815,729.20
  4. Step 4: Simplify right side
    918,080.80x = 1,123,357,974,779.04
  5. Step 5: Solve for x
    x = 1,123,357,974,779.04/918,080.80
  6. Step 6: Final answer
    x = 1,223,593.80

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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.