Home / 691,149.45-1,036,724.18-292,240.65

Finding the Fourth Proportional to 691,149.45, 1,036,724.18 and 292,240.65

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Solution

The fourth proportional to 691,149.45, 1,036,724.18 and 292,240.65 is: 438,360.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,149.45 : 1,036,724.18 = 292,240.65 : x
  2. Step 2: Convert to fraction form
    691,149.45/1,036,724.18 = 292,240.65/x
  3. Step 3: Cross multiply
    691,149.45x = 1,036,724.18 × 292,240.65
  4. Step 4: Simplify right side
    691,149.45x = 302,972,948,233.92
  5. Step 5: Solve for x
    x = 302,972,948,233.92/691,149.45
  6. Step 6: Final answer
    x = 438,360.98

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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.