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Finding the Fourth Proportional to 699,815.18, 966,209.76 and 538,385.42

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Solution

The fourth proportional to 699,815.18, 966,209.76 and 538,385.42 is: 743,329.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,815.18 : 966,209.76 = 538,385.42 : x
  2. Step 2: Convert to fraction form
    699,815.18/966,209.76 = 538,385.42/x
  3. Step 3: Cross multiply
    699,815.18x = 966,209.76 × 538,385.42
  4. Step 4: Simplify right side
    699,815.18x = 520,193,247,445.70
  5. Step 5: Solve for x
    x = 520,193,247,445.70/699,815.18
  6. Step 6: Final answer
    x = 743,329.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.