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Finding the Fourth Proportional to 543,527.70, 815,291.55 and 341,448.90

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Solution

The fourth proportional to 543,527.70, 815,291.55 and 341,448.90 is: 512,173.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,527.70 : 815,291.55 = 341,448.90 : x
  2. Step 2: Convert to fraction form
    543,527.70/815,291.55 = 341,448.90/x
  3. Step 3: Cross multiply
    543,527.70x = 815,291.55 × 341,448.90
  4. Step 4: Simplify right side
    543,527.70x = 278,380,402,926.80
  5. Step 5: Solve for x
    x = 278,380,402,926.80/543,527.70
  6. Step 6: Final answer
    x = 512,173.35

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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.