Home / 987,276.57-1,480,621.42-418,649.28

Finding the Fourth Proportional to 987,276.57, 1,480,621.42 and 418,649.28

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Solution

The fourth proportional to 987,276.57, 1,480,621.42 and 418,649.28 is: 627,849.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,276.57 : 1,480,621.42 = 418,649.28 : x
  2. Step 2: Convert to fraction form
    987,276.57/1,480,621.42 = 418,649.28/x
  3. Step 3: Cross multiply
    987,276.57x = 1,480,621.42 × 418,649.28
  4. Step 4: Simplify right side
    987,276.57x = 619,861,091,435.58
  5. Step 5: Solve for x
    x = 619,861,091,435.58/987,276.57
  6. Step 6: Final answer
    x = 627,849.49

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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.