Home / 439,008.20-658,512.30-328,416.20

Finding the Fourth Proportional to 439,008.20, 658,512.30 and 328,416.20

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Solution

The fourth proportional to 439,008.20, 658,512.30 and 328,416.20 is: 492,624.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,008.20 : 658,512.30 = 328,416.20 : x
  2. Step 2: Convert to fraction form
    439,008.20/658,512.30 = 328,416.20/x
  3. Step 3: Cross multiply
    439,008.20x = 658,512.30 × 328,416.20
  4. Step 4: Simplify right side
    439,008.20x = 216,266,107,219.26
  5. Step 5: Solve for x
    x = 216,266,107,219.26/439,008.20
  6. Step 6: Final answer
    x = 492,624.30

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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.