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Finding the Fourth Proportional to 524,809.20, 787,213.80 and 258,610.80

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Solution

The fourth proportional to 524,809.20, 787,213.80 and 258,610.80 is: 387,916.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,809.20 : 787,213.80 = 258,610.80 : x
  2. Step 2: Convert to fraction form
    524,809.20/787,213.80 = 258,610.80/x
  3. Step 3: Cross multiply
    524,809.20x = 787,213.80 × 258,610.80
  4. Step 4: Simplify right side
    524,809.20x = 203,581,990,589.04
  5. Step 5: Solve for x
    x = 203,581,990,589.04/524,809.20
  6. Step 6: Final answer
    x = 387,916.20

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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.