Home / 391,214,512.80-586,821,769.20-255,165,616.80

Finding the Fourth Proportional to 391,214,512.80, 586,821,769.20 and 255,165,616.80

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Solution

The fourth proportional to 391,214,512.80, 586,821,769.20 and 255,165,616.80 is: 382,748,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,214,512.80 : 586,821,769.20 = 255,165,616.80 : x
  2. Step 2: Convert to fraction form
    391,214,512.80/586,821,769.20 = 255,165,616.80/x
  3. Step 3: Cross multiply
    391,214,512.80x = 586,821,769.20 × 255,165,616.80
  4. Step 4: Simplify right side
    391,214,512.80x = 149,736,738,689,585,248
  5. Step 5: Solve for x
    x = 149,736,738,689,585,248/391,214,512.80
  6. Step 6: Final answer
    x = 382,748,425.20

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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.