Home / 780,780,562.76-1,171,364,688.84-387,491,972.78

Finding the Fourth Proportional to 780,780,562.76, 1,171,364,688.84 and 387,491,972.78

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Solution

The fourth proportional to 780,780,562.76, 1,171,364,688.84 and 387,491,972.78 is: 581,334,161.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,780,562.76 : 1,171,364,688.84 = 387,491,972.78 : x
  2. Step 2: Convert to fraction form
    780,780,562.76/1,171,364,688.84 = 387,491,972.78/x
  3. Step 3: Cross multiply
    780,780,562.76x = 1,171,364,688.84 × 387,491,972.78
  4. Step 4: Simplify right side
    780,780,562.76x = 453,894,414,123,442,368
  5. Step 5: Solve for x
    x = 453,894,414,123,442,368/780,780,562.76
  6. Step 6: Final answer
    x = 581,334,161.96

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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.