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Finding the Fourth Proportional to 536,626.40, 804,939.60 and 387,910.40

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Solution

The fourth proportional to 536,626.40, 804,939.60 and 387,910.40 is: 581,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,626.40 : 804,939.60 = 387,910.40 : x
  2. Step 2: Convert to fraction form
    536,626.40/804,939.60 = 387,910.40/x
  3. Step 3: Cross multiply
    536,626.40x = 804,939.60 × 387,910.40
  4. Step 4: Simplify right side
    536,626.40x = 312,244,442,211.84
  5. Step 5: Solve for x
    x = 312,244,442,211.84/536,626.40
  6. Step 6: Final answer
    x = 581,865.60

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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.