Home / 391,247,793.90-586,871,690.85-253,498,286.70

Finding the Fourth Proportional to 391,247,793.90, 586,871,690.85 and 253,498,286.70

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Solution

The fourth proportional to 391,247,793.90, 586,871,690.85 and 253,498,286.70 is: 380,247,430.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,247,793.90 : 586,871,690.85 = 253,498,286.70 : x
  2. Step 2: Convert to fraction form
    391,247,793.90/586,871,690.85 = 253,498,286.70/x
  3. Step 3: Cross multiply
    391,247,793.90x = 586,871,690.85 × 253,498,286.70
  4. Step 4: Simplify right side
    391,247,793.90x = 148,770,968,143,207,072
  5. Step 5: Solve for x
    x = 148,770,968,143,207,072/391,247,793.90
  6. Step 6: Final answer
    x = 380,247,430.05

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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.