Home / 738,305.88-1,105,850.28-485,300.76

Finding the Fourth Proportional to 738,305.88, 1,105,850.28 and 485,300.76

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Solution

The fourth proportional to 738,305.88, 1,105,850.28 and 485,300.76 is: 726,893.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,305.88 : 1,105,850.28 = 485,300.76 : x
  2. Step 2: Convert to fraction form
    738,305.88/1,105,850.28 = 485,300.76/x
  3. Step 3: Cross multiply
    738,305.88x = 1,105,850.28 × 485,300.76
  4. Step 4: Simplify right side
    738,305.88x = 536,669,981,330.21
  5. Step 5: Solve for x
    x = 536,669,981,330.21/738,305.88
  6. Step 6: Final answer
    x = 726,893.82

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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.