Home / 285,720,711.44-428,535,154.71-78,410,694.92

Finding the Fourth Proportional to 285,720,711.44, 428,535,154.71 and 78,410,694.92

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Solution

The fourth proportional to 285,720,711.44, 428,535,154.71 and 78,410,694.92 is: 117,603,442.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,720,711.44 : 428,535,154.71 = 78,410,694.92 : x
  2. Step 2: Convert to fraction form
    285,720,711.44/428,535,154.71 = 78,410,694.92/x
  3. Step 3: Cross multiply
    285,720,711.44x = 428,535,154.71 × 78,410,694.92
  4. Step 4: Simplify right side
    285,720,711.44x = 33,601,739,278,460,812
  5. Step 5: Solve for x
    x = 33,601,739,278,460,812/285,720,711.44
  6. Step 6: Final answer
    x = 117,603,442.57

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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.