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Finding the Fourth Proportional to 587,197.20, 880,104.60 and 439,280.40

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Solution

The fourth proportional to 587,197.20, 880,104.60 and 439,280.40 is: 658,403.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,197.20 : 880,104.60 = 439,280.40 : x
  2. Step 2: Convert to fraction form
    587,197.20/880,104.60 = 439,280.40/x
  3. Step 3: Cross multiply
    587,197.20x = 880,104.60 × 439,280.40
  4. Step 4: Simplify right side
    587,197.20x = 386,612,700,729.84
  5. Step 5: Solve for x
    x = 386,612,700,729.84/587,197.20
  6. Step 6: Final answer
    x = 658,403.52

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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.