Home / 1,188,378.40-1,781,780.40-656,154.40

Finding the Fourth Proportional to 1,188,378.40, 1,781,780.40 and 656,154.40

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Solution

The fourth proportional to 1,188,378.40, 1,781,780.40 and 656,154.40 is: 983,796.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,378.40 : 1,781,780.40 = 656,154.40 : x
  2. Step 2: Convert to fraction form
    1,188,378.40/1,781,780.40 = 656,154.40/x
  3. Step 3: Cross multiply
    1,188,378.40x = 1,781,780.40 × 656,154.40
  4. Step 4: Simplify right side
    1,188,378.40x = 1,169,123,049,293.76
  5. Step 5: Solve for x
    x = 1,169,123,049,293.76/1,188,378.40
  6. Step 6: Final answer
    x = 983,796.95

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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.