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Finding the Fourth Proportional to 546,430.20, 819,645.30 and 280,709.70

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Solution

The fourth proportional to 546,430.20, 819,645.30 and 280,709.70 is: 421,064.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,430.20 : 819,645.30 = 280,709.70 : x
  2. Step 2: Convert to fraction form
    546,430.20/819,645.30 = 280,709.70/x
  3. Step 3: Cross multiply
    546,430.20x = 819,645.30 × 280,709.70
  4. Step 4: Simplify right side
    546,430.20x = 230,082,386,269.41
  5. Step 5: Solve for x
    x = 230,082,386,269.41/546,430.20
  6. Step 6: Final answer
    x = 421,064.55

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Similar ratio
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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.