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Finding the Fourth Proportional to 543,379.20, 815,068.80 and 341,300.40

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Solution

The fourth proportional to 543,379.20, 815,068.80 and 341,300.40 is: 511,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,379.20 : 815,068.80 = 341,300.40 : x
  2. Step 2: Convert to fraction form
    543,379.20/815,068.80 = 341,300.40/x
  3. Step 3: Cross multiply
    543,379.20x = 815,068.80 × 341,300.40
  4. Step 4: Simplify right side
    543,379.20x = 278,183,307,467.52
  5. Step 5: Solve for x
    x = 278,183,307,467.52/543,379.20
  6. Step 6: Final answer
    x = 511,950.60

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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.