Home / 915,923.20-1,373,884.80-418,259.20

Finding the Fourth Proportional to 915,923.20, 1,373,884.80 and 418,259.20

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Solution

The fourth proportional to 915,923.20, 1,373,884.80 and 418,259.20 is: 627,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,923.20 : 1,373,884.80 = 418,259.20 : x
  2. Step 2: Convert to fraction form
    915,923.20/1,373,884.80 = 418,259.20/x
  3. Step 3: Cross multiply
    915,923.20x = 1,373,884.80 × 418,259.20
  4. Step 4: Simplify right side
    915,923.20x = 574,639,957,340.16
  5. Step 5: Solve for x
    x = 574,639,957,340.16/915,923.20
  6. Step 6: Final answer
    x = 627,388.80

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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.