Home / 486,029.10-729,043.65-423,821.10

Finding the Fourth Proportional to 486,029.10, 729,043.65 and 423,821.10

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Solution

The fourth proportional to 486,029.10, 729,043.65 and 423,821.10 is: 635,731.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,029.10 : 729,043.65 = 423,821.10 : x
  2. Step 2: Convert to fraction form
    486,029.10/729,043.65 = 423,821.10/x
  3. Step 3: Cross multiply
    486,029.10x = 729,043.65 × 423,821.10
  4. Step 4: Simplify right side
    486,029.10x = 308,984,081,691.02
  5. Step 5: Solve for x
    x = 308,984,081,691.02/486,029.10
  6. Step 6: Final answer
    x = 635,731.65

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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.