Home / 391,033,123.20-587,176,372.80-310,920,278.40

Finding the Fourth Proportional to 391,033,123.20, 587,176,372.80 and 310,920,278.40

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Solution

The fourth proportional to 391,033,123.20, 587,176,372.80 and 310,920,278.40 is: 466,878,713.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,033,123.20 : 587,176,372.80 = 310,920,278.40 : x
  2. Step 2: Convert to fraction form
    391,033,123.20/587,176,372.80 = 310,920,278.40/x
  3. Step 3: Cross multiply
    391,033,123.20x = 587,176,372.80 × 310,920,278.40
  4. Step 4: Simplify right side
    391,033,123.20x = 182,565,041,300,878,144
  5. Step 5: Solve for x
    x = 182,565,041,300,878,144/391,033,123.20
  6. Step 6: Final answer
    x = 466,878,713.00

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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.