Home / 1,128,134.40-1,691,657.12-654,938.88

Finding the Fourth Proportional to 1,128,134.40, 1,691,657.12 and 654,938.88

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Solution

The fourth proportional to 1,128,134.40, 1,691,657.12 and 654,938.88 is: 982,092.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,134.40 : 1,691,657.12 = 654,938.88 : x
  2. Step 2: Convert to fraction form
    1,128,134.40/1,691,657.12 = 654,938.88/x
  3. Step 3: Cross multiply
    1,128,134.40x = 1,691,657.12 × 654,938.88
  4. Step 4: Simplify right side
    1,128,134.40x = 1,107,932,019,516.83
  5. Step 5: Solve for x
    x = 1,107,932,019,516.83/1,128,134.40
  6. Step 6: Final answer
    x = 982,092.22

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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.