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Finding the Fourth Proportional to 900,616.80, 1,347,644.70 and 664,420.80

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Solution

The fourth proportional to 900,616.80, 1,347,644.70 and 664,420.80 is: 994,211.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,616.80 : 1,347,644.70 = 664,420.80 : x
  2. Step 2: Convert to fraction form
    900,616.80/1,347,644.70 = 664,420.80/x
  3. Step 3: Cross multiply
    900,616.80x = 1,347,644.70 × 664,420.80
  4. Step 4: Simplify right side
    900,616.80x = 895,403,169,689.76
  5. Step 5: Solve for x
    x = 895,403,169,689.76/900,616.80
  6. Step 6: Final answer
    x = 994,211.04

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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.