Home / 1,148,402.80-1,584,780.28-639,105.18

Finding the Fourth Proportional to 1,148,402.80, 1,584,780.28 and 639,105.18

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Solution

The fourth proportional to 1,148,402.80, 1,584,780.28 and 639,105.18 is: 881,956.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148,402.80 : 1,584,780.28 = 639,105.18 : x
  2. Step 2: Convert to fraction form
    1,148,402.80/1,584,780.28 = 639,105.18/x
  3. Step 3: Cross multiply
    1,148,402.80x = 1,584,780.28 × 639,105.18
  4. Step 4: Simplify right side
    1,148,402.80x = 1,012,841,286,109.85
  5. Step 5: Solve for x
    x = 1,012,841,286,109.85/1,148,402.80
  6. Step 6: Final answer
    x = 881,956.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.