Home / 987,111.39-1,480,025.55-388,130.97

Finding the Fourth Proportional to 987,111.39, 1,480,025.55 and 388,130.97

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Solution

The fourth proportional to 987,111.39, 1,480,025.55 and 388,130.97 is: 581,944.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,111.39 : 1,480,025.55 = 388,130.97 : x
  2. Step 2: Convert to fraction form
    987,111.39/1,480,025.55 = 388,130.97/x
  3. Step 3: Cross multiply
    987,111.39x = 1,480,025.55 × 388,130.97
  4. Step 4: Simplify right side
    987,111.39x = 574,443,752,346.28
  5. Step 5: Solve for x
    x = 574,443,752,346.28/987,111.39
  6. Step 6: Final answer
    x = 581,944.20

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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.