Home / 749,211.75-1,123,818.71-305,979.75

Finding the Fourth Proportional to 749,211.75, 1,123,818.71 and 305,979.75

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Solution

The fourth proportional to 749,211.75, 1,123,818.71 and 305,979.75 is: 458,970.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,211.75 : 1,123,818.71 = 305,979.75 : x
  2. Step 2: Convert to fraction form
    749,211.75/1,123,818.71 = 305,979.75/x
  3. Step 3: Cross multiply
    749,211.75x = 1,123,818.71 × 305,979.75
  4. Step 4: Simplify right side
    749,211.75x = 343,865,766,401.22
  5. Step 5: Solve for x
    x = 343,865,766,401.22/749,211.75
  6. Step 6: Final answer
    x = 458,970.07

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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.