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Finding the Fourth Proportional to 664,015.60, 994,711.20 and 363,959.20

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Solution

The fourth proportional to 664,015.60, 994,711.20 and 363,959.20 is: 545,219.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,015.60 : 994,711.20 = 363,959.20 : x
  2. Step 2: Convert to fraction form
    664,015.60/994,711.20 = 363,959.20/x
  3. Step 3: Cross multiply
    664,015.60x = 994,711.20 × 363,959.20
  4. Step 4: Simplify right side
    664,015.60x = 362,034,292,583.04
  5. Step 5: Solve for x
    x = 362,034,292,583.04/664,015.60
  6. Step 6: Final answer
    x = 545,219.56

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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.