Home / 791,816.80-1,187,725.20-318,841.60

Finding the Fourth Proportional to 791,816.80, 1,187,725.20 and 318,841.60

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Solution

The fourth proportional to 791,816.80, 1,187,725.20 and 318,841.60 is: 478,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,816.80 : 1,187,725.20 = 318,841.60 : x
  2. Step 2: Convert to fraction form
    791,816.80/1,187,725.20 = 318,841.60/x
  3. Step 3: Cross multiply
    791,816.80x = 1,187,725.20 × 318,841.60
  4. Step 4: Simplify right side
    791,816.80x = 378,696,203,128.32
  5. Step 5: Solve for x
    x = 378,696,203,128.32/791,816.80
  6. Step 6: Final answer
    x = 478,262.40

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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.