Home / 500,586.96-690,906.06-391,475.10

Finding the Fourth Proportional to 500,586.96, 690,906.06 and 391,475.10

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Solution

The fourth proportional to 500,586.96, 690,906.06 and 391,475.10 is: 540,310.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,586.96 : 690,906.06 = 391,475.10 : x
  2. Step 2: Convert to fraction form
    500,586.96/690,906.06 = 391,475.10/x
  3. Step 3: Cross multiply
    500,586.96x = 690,906.06 × 391,475.10
  4. Step 4: Simplify right side
    500,586.96x = 270,472,518,929.11
  5. Step 5: Solve for x
    x = 270,472,518,929.11/500,586.96
  6. Step 6: Final answer
    x = 540,310.76

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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.