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Finding the Fourth Proportional to 485,634.60, 730,007.10 and 346,357.80

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Solution

The fourth proportional to 485,634.60, 730,007.10 and 346,357.80 is: 520,645.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,634.60 : 730,007.10 = 346,357.80 : x
  2. Step 2: Convert to fraction form
    485,634.60/730,007.10 = 346,357.80/x
  3. Step 3: Cross multiply
    485,634.60x = 730,007.10 × 346,357.80
  4. Step 4: Simplify right side
    485,634.60x = 252,843,653,140.38
  5. Step 5: Solve for x
    x = 252,843,653,140.38/485,634.60
  6. Step 6: Final answer
    x = 520,645.88

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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.