Home / 749,146.75-1,123,721.21-305,914.75

Finding the Fourth Proportional to 749,146.75, 1,123,721.21 and 305,914.75

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Solution

The fourth proportional to 749,146.75, 1,123,721.21 and 305,914.75 is: 458,872.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,146.75 : 1,123,721.21 = 305,914.75 : x
  2. Step 2: Convert to fraction form
    749,146.75/1,123,721.21 = 305,914.75/x
  3. Step 3: Cross multiply
    749,146.75x = 1,123,721.21 × 305,914.75
  4. Step 4: Simplify right side
    749,146.75x = 343,762,893,026.85
  5. Step 5: Solve for x
    x = 343,762,893,026.85/749,146.75
  6. Step 6: Final answer
    x = 458,872.57

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Half scale
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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.