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Finding the Fourth Proportional to 485,635.60, 730,008.60 and 346,358.80

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Solution

The fourth proportional to 485,635.60, 730,008.60 and 346,358.80 is: 520,647.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,635.60 : 730,008.60 = 346,358.80 : x
  2. Step 2: Convert to fraction form
    485,635.60/730,008.60 = 346,358.80/x
  3. Step 3: Cross multiply
    485,635.60x = 730,008.60 × 346,358.80
  4. Step 4: Simplify right side
    485,635.60x = 252,844,902,685.68
  5. Step 5: Solve for x
    x = 252,844,902,685.68/485,635.60
  6. Step 6: Final answer
    x = 520,647.38

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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.