Home / 481,228.20-721,842.30-439,237.80

Finding the Fourth Proportional to 481,228.20, 721,842.30 and 439,237.80

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Solution

The fourth proportional to 481,228.20, 721,842.30 and 439,237.80 is: 658,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,228.20 : 721,842.30 = 439,237.80 : x
  2. Step 2: Convert to fraction form
    481,228.20/721,842.30 = 439,237.80/x
  3. Step 3: Cross multiply
    481,228.20x = 721,842.30 × 439,237.80
  4. Step 4: Simplify right side
    481,228.20x = 317,060,423,798.94
  5. Step 5: Solve for x
    x = 317,060,423,798.94/481,228.20
  6. Step 6: Final answer
    x = 658,856.70

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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.