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Finding the Fourth Proportional to 546,859.40, 820,289.10 and 413,999.15

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Solution

The fourth proportional to 546,859.40, 820,289.10 and 413,999.15 is: 620,998.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,859.40 : 820,289.10 = 413,999.15 : x
  2. Step 2: Convert to fraction form
    546,859.40/820,289.10 = 413,999.15/x
  3. Step 3: Cross multiply
    546,859.40x = 820,289.10 × 413,999.15
  4. Step 4: Simplify right side
    546,859.40x = 339,598,990,154.27
  5. Step 5: Solve for x
    x = 339,598,990,154.27/546,859.40
  6. Step 6: Final answer
    x = 620,998.73

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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.