Home / 7,178,538.47-9,906,501.15-3,915,353.21

Finding the Fourth Proportional to 7,178,538.47, 9,906,501.15 and 3,915,353.21

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Solution

The fourth proportional to 7,178,538.47, 9,906,501.15 and 3,915,353.21 is: 5,403,251.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178,538.47 : 9,906,501.15 = 3,915,353.21 : x
  2. Step 2: Convert to fraction form
    7,178,538.47/9,906,501.15 = 3,915,353.21/x
  3. Step 3: Cross multiply
    7,178,538.47x = 9,906,501.15 × 3,915,353.21
  4. Step 4: Simplify right side
    7,178,538.47x = 38,787,451,027,988.69
  5. Step 5: Solve for x
    x = 38,787,451,027,988.69/7,178,538.47
  6. Step 6: Final answer
    x = 5,403,251.82

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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.