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Finding the Fourth Proportional to 888,280.80, 1,332,615.60 and 439,216.80

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Solution

The fourth proportional to 888,280.80, 1,332,615.60 and 439,216.80 is: 658,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,280.80 : 1,332,615.60 = 439,216.80 : x
  2. Step 2: Convert to fraction form
    888,280.80/1,332,615.60 = 439,216.80/x
  3. Step 3: Cross multiply
    888,280.80x = 1,332,615.60 × 439,216.80
  4. Step 4: Simplify right side
    888,280.80x = 585,307,159,462.08
  5. Step 5: Solve for x
    x = 585,307,159,462.08/888,280.80
  6. Step 6: Final answer
    x = 658,921.32

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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.