Home / 442,128.40-662,512.20-329,279.20

Finding the Fourth Proportional to 442,128.40, 662,512.20 and 329,279.20

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Solution

The fourth proportional to 442,128.40, 662,512.20 and 329,279.20 is: 493,412.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,128.40 : 662,512.20 = 329,279.20 : x
  2. Step 2: Convert to fraction form
    442,128.40/662,512.20 = 329,279.20/x
  3. Step 3: Cross multiply
    442,128.40x = 662,512.20 × 329,279.20
  4. Step 4: Simplify right side
    442,128.40x = 218,151,487,206.24
  5. Step 5: Solve for x
    x = 218,151,487,206.24/442,128.40
  6. Step 6: Final answer
    x = 493,412.07

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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.