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Finding the Fourth Proportional to 529,428.80, 794,143.20 and 280,596.80

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Solution

The fourth proportional to 529,428.80, 794,143.20 and 280,596.80 is: 420,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,428.80 : 794,143.20 = 280,596.80 : x
  2. Step 2: Convert to fraction form
    529,428.80/794,143.20 = 280,596.80/x
  3. Step 3: Cross multiply
    529,428.80x = 794,143.20 × 280,596.80
  4. Step 4: Simplify right side
    529,428.80x = 222,834,040,661.76
  5. Step 5: Solve for x
    x = 222,834,040,661.76/529,428.80
  6. Step 6: Final answer
    x = 420,895.20

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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.