Home / 7,151,920.11-9,869,773.12-3,888,756.88

Finding the Fourth Proportional to 7,151,920.11, 9,869,773.12 and 3,888,756.88

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Solution

The fourth proportional to 7,151,920.11, 9,869,773.12 and 3,888,756.88 is: 5,366,551.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151,920.11 : 9,869,773.12 = 3,888,756.88 : x
  2. Step 2: Convert to fraction form
    7,151,920.11/9,869,773.12 = 3,888,756.88/x
  3. Step 3: Cross multiply
    7,151,920.11x = 9,869,773.12 × 3,888,756.88
  4. Step 4: Simplify right side
    7,151,920.11x = 38,381,148,090,042.74
  5. Step 5: Solve for x
    x = 38,381,148,090,042.74/7,151,920.11
  6. Step 6: Final answer
    x = 5,366,551.57

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1.5x scale

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.