Home / 738,521.96-1,107,900.99-312,061.82

Finding the Fourth Proportional to 738,521.96, 1,107,900.99 and 312,061.82

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Solution

The fourth proportional to 738,521.96, 1,107,900.99 and 312,061.82 is: 468,142.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,521.96 : 1,107,900.99 = 312,061.82 : x
  2. Step 2: Convert to fraction form
    738,521.96/1,107,900.99 = 312,061.82/x
  3. Step 3: Cross multiply
    738,521.96x = 1,107,900.99 × 312,061.82
  4. Step 4: Simplify right side
    738,521.96x = 345,733,593,779.70
  5. Step 5: Solve for x
    x = 345,733,593,779.70/738,521.96
  6. Step 6: Final answer
    x = 468,142.61

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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.