Home / 667,586.30-1,001,379.45-489,127.10

Finding the Fourth Proportional to 667,586.30, 1,001,379.45 and 489,127.10

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Solution

The fourth proportional to 667,586.30, 1,001,379.45 and 489,127.10 is: 733,690.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,586.30 : 1,001,379.45 = 489,127.10 : x
  2. Step 2: Convert to fraction form
    667,586.30/1,001,379.45 = 489,127.10/x
  3. Step 3: Cross multiply
    667,586.30x = 1,001,379.45 × 489,127.10
  4. Step 4: Simplify right side
    667,586.30x = 489,801,826,378.10
  5. Step 5: Solve for x
    x = 489,801,826,378.10/667,586.30
  6. Step 6: Final answer
    x = 733,690.65

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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.