Home / 1,187,712.70-1,781,569.05-988,258.30

Finding the Fourth Proportional to 1,187,712.70, 1,781,569.05 and 988,258.30

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Solution

The fourth proportional to 1,187,712.70, 1,781,569.05 and 988,258.30 is: 1,482,387.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,712.70 : 1,781,569.05 = 988,258.30 : x
  2. Step 2: Convert to fraction form
    1,187,712.70/1,781,569.05 = 988,258.30/x
  3. Step 3: Cross multiply
    1,187,712.70x = 1,781,569.05 × 988,258.30
  4. Step 4: Simplify right side
    1,187,712.70x = 1,760,650,400,685.62
  5. Step 5: Solve for x
    x = 1,760,650,400,685.62/1,187,712.70
  6. Step 6: Final answer
    x = 1,482,387.45

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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.