Home / 486,029.60-729,044.40-423,821.60

Finding the Fourth Proportional to 486,029.60, 729,044.40 and 423,821.60

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Solution

The fourth proportional to 486,029.60, 729,044.40 and 423,821.60 is: 635,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,029.60 : 729,044.40 = 423,821.60 : x
  2. Step 2: Convert to fraction form
    486,029.60/729,044.40 = 423,821.60/x
  3. Step 3: Cross multiply
    486,029.60x = 729,044.40 × 423,821.60
  4. Step 4: Simplify right side
    486,029.60x = 308,984,764,079.04
  5. Step 5: Solve for x
    x = 308,984,764,079.04/486,029.60
  6. Step 6: Final answer
    x = 635,732.40

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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.