Home / 481,549.20-664,648.48-320,411.04

Finding the Fourth Proportional to 481,549.20, 664,648.48 and 320,411.04

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Solution

The fourth proportional to 481,549.20, 664,648.48 and 320,411.04 is: 442,240.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,549.20 : 664,648.48 = 320,411.04 : x
  2. Step 2: Convert to fraction form
    481,549.20/664,648.48 = 320,411.04/x
  3. Step 3: Cross multiply
    481,549.20x = 664,648.48 × 320,411.04
  4. Step 4: Simplify right side
    481,549.20x = 212,960,710,711.22
  5. Step 5: Solve for x
    x = 212,960,710,711.22/481,549.20
  6. Step 6: Final answer
    x = 442,240.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.