Home / 7,178,776.74-9,906,830.15-3,915,591.71

Finding the Fourth Proportional to 7,178,776.74, 9,906,830.15 and 3,915,591.71

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Solution

The fourth proportional to 7,178,776.74, 9,906,830.15 and 3,915,591.71 is: 5,403,581.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178,776.74 : 9,906,830.15 = 3,915,591.71 : x
  2. Step 2: Convert to fraction form
    7,178,776.74/9,906,830.15 = 3,915,591.71/x
  3. Step 3: Cross multiply
    7,178,776.74x = 9,906,830.15 × 3,915,591.71
  4. Step 4: Simplify right side
    7,178,776.74x = 38,791,101,938,605.95
  5. Step 5: Solve for x
    x = 38,791,101,938,605.95/7,178,776.74
  6. Step 6: Final answer
    x = 5,403,581.05

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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.