Home / 520,922.10-781,383.15-436,941.30

Finding the Fourth Proportional to 520,922.10, 781,383.15 and 436,941.30

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Solution

The fourth proportional to 520,922.10, 781,383.15 and 436,941.30 is: 655,411.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,922.10 : 781,383.15 = 436,941.30 : x
  2. Step 2: Convert to fraction form
    520,922.10/781,383.15 = 436,941.30/x
  3. Step 3: Cross multiply
    520,922.10x = 781,383.15 × 436,941.30
  4. Step 4: Simplify right side
    520,922.10x = 341,418,569,359.10
  5. Step 5: Solve for x
    x = 341,418,569,359.10/520,922.10
  6. Step 6: Final answer
    x = 655,411.95

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Double scale
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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.