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Finding the Fourth Proportional to 543,065.62, 815,194.35 and 431,463.22

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Solution

The fourth proportional to 543,065.62, 815,194.35 and 431,463.22 is: 647,668.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,065.62 : 815,194.35 = 431,463.22 : x
  2. Step 2: Convert to fraction form
    543,065.62/815,194.35 = 431,463.22/x
  3. Step 3: Cross multiply
    543,065.62x = 815,194.35 × 431,463.22
  4. Step 4: Simplify right side
    543,065.62x = 351,726,379,176.81
  5. Step 5: Solve for x
    x = 351,726,379,176.81/543,065.62
  6. Step 6: Final answer
    x = 647,668.29

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Double scale
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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.