Home / 520,913.10-781,369.65-188,445.90

Finding the Fourth Proportional to 520,913.10, 781,369.65 and 188,445.90

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Solution

The fourth proportional to 520,913.10, 781,369.65 and 188,445.90 is: 282,668.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,913.10 : 781,369.65 = 188,445.90 : x
  2. Step 2: Convert to fraction form
    520,913.10/781,369.65 = 188,445.90/x
  3. Step 3: Cross multiply
    520,913.10x = 781,369.65 × 188,445.90
  4. Step 4: Simplify right side
    520,913.10x = 147,245,906,926.94
  5. Step 5: Solve for x
    x = 147,245,906,926.94/520,913.10
  6. Step 6: Final answer
    x = 282,668.85

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Similar ratio
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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.