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Finding the Fourth Proportional to 891,292.80, 1,336,348.80 and 492,124.80

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Solution

The fourth proportional to 891,292.80, 1,336,348.80 and 492,124.80 is: 737,861.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,292.80 : 1,336,348.80 = 492,124.80 : x
  2. Step 2: Convert to fraction form
    891,292.80/1,336,348.80 = 492,124.80/x
  3. Step 3: Cross multiply
    891,292.80x = 1,336,348.80 × 492,124.80
  4. Step 4: Simplify right side
    891,292.80x = 657,650,385,930.24
  5. Step 5: Solve for x
    x = 657,650,385,930.24/891,292.80
  6. Step 6: Final answer
    x = 737,861.21

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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.