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Finding the Fourth Proportional to 494,666.80, 742,000.20 and 120,689.80

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Solution

The fourth proportional to 494,666.80, 742,000.20 and 120,689.80 is: 181,034.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,666.80 : 742,000.20 = 120,689.80 : x
  2. Step 2: Convert to fraction form
    494,666.80/742,000.20 = 120,689.80/x
  3. Step 3: Cross multiply
    494,666.80x = 742,000.20 × 120,689.80
  4. Step 4: Simplify right side
    494,666.80x = 89,551,855,737.96
  5. Step 5: Solve for x
    x = 89,551,855,737.96/494,666.80
  6. Step 6: Final answer
    x = 181,034.70

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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.