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Finding the Fourth Proportional to 403,034.60, 605,864.10 and 285,519.80

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Solution

The fourth proportional to 403,034.60, 605,864.10 and 285,519.80 is: 429,209.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,034.60 : 605,864.10 = 285,519.80 : x
  2. Step 2: Convert to fraction form
    403,034.60/605,864.10 = 285,519.80/x
  3. Step 3: Cross multiply
    403,034.60x = 605,864.10 × 285,519.80
  4. Step 4: Simplify right side
    403,034.60x = 172,986,196,659.18
  5. Step 5: Solve for x
    x = 172,986,196,659.18/403,034.60
  6. Step 6: Final answer
    x = 429,209.30

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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.