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Finding the Fourth Proportional to 649,223.10, 973,834.65 and 639,891.90

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Solution

The fourth proportional to 649,223.10, 973,834.65 and 639,891.90 is: 959,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,223.10 : 973,834.65 = 639,891.90 : x
  2. Step 2: Convert to fraction form
    649,223.10/973,834.65 = 639,891.90/x
  3. Step 3: Cross multiply
    649,223.10x = 973,834.65 × 639,891.90
  4. Step 4: Simplify right side
    649,223.10x = 623,148,904,474.34
  5. Step 5: Solve for x
    x = 623,148,904,474.34/649,223.10
  6. Step 6: Final answer
    x = 959,837.85

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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.