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Finding the Fourth Proportional to 529,813.80, 794,720.70 and 280,981.80

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Solution

The fourth proportional to 529,813.80, 794,720.70 and 280,981.80 is: 421,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,813.80 : 794,720.70 = 280,981.80 : x
  2. Step 2: Convert to fraction form
    529,813.80/794,720.70 = 280,981.80/x
  3. Step 3: Cross multiply
    529,813.80x = 794,720.70 × 280,981.80
  4. Step 4: Simplify right side
    529,813.80x = 223,302,052,783.26
  5. Step 5: Solve for x
    x = 223,302,052,783.26/529,813.80
  6. Step 6: Final answer
    x = 421,472.70

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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.