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Finding the Fourth Proportional to 900,614.80, 1,347,641.70 and 664,418.80

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Solution

The fourth proportional to 900,614.80, 1,347,641.70 and 664,418.80 is: 994,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,614.80 : 1,347,641.70 = 664,418.80 : x
  2. Step 2: Convert to fraction form
    900,614.80/1,347,641.70 = 664,418.80/x
  3. Step 3: Cross multiply
    900,614.80x = 1,347,641.70 × 664,418.80
  4. Step 4: Simplify right side
    900,614.80x = 895,398,481,143.96
  5. Step 5: Solve for x
    x = 895,398,481,143.96/900,614.80
  6. Step 6: Final answer
    x = 994,208.05

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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.