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Finding the Fourth Proportional to 520,147.67, 780,446.88 and 183,428.91

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Solution

The fourth proportional to 520,147.67, 780,446.88 and 183,428.91 is: 275,222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,147.67 : 780,446.88 = 183,428.91 : x
  2. Step 2: Convert to fraction form
    520,147.67/780,446.88 = 183,428.91/x
  3. Step 3: Cross multiply
    520,147.67x = 780,446.88 × 183,428.91
  4. Step 4: Simplify right side
    520,147.67x = 143,156,520,511.30
  5. Step 5: Solve for x
    x = 143,156,520,511.30/520,147.67
  6. Step 6: Final answer
    x = 275,222.85

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1.5x scale

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.