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Finding the Fourth Proportional to 543,881.40, 815,822.10 and 343,552.20

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Solution

The fourth proportional to 543,881.40, 815,822.10 and 343,552.20 is: 515,328.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,881.40 : 815,822.10 = 343,552.20 : x
  2. Step 2: Convert to fraction form
    543,881.40/815,822.10 = 343,552.20/x
  3. Step 3: Cross multiply
    543,881.40x = 815,822.10 × 343,552.20
  4. Step 4: Simplify right side
    543,881.40x = 280,277,477,263.62
  5. Step 5: Solve for x
    x = 280,277,477,263.62/543,881.40
  6. Step 6: Final answer
    x = 515,328.30

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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.