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Finding the Fourth Proportional to 880,861.60, 1,321,292.40 and 872,567.20

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Solution

The fourth proportional to 880,861.60, 1,321,292.40 and 872,567.20 is: 1,308,850.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,861.60 : 1,321,292.40 = 872,567.20 : x
  2. Step 2: Convert to fraction form
    880,861.60/1,321,292.40 = 872,567.20/x
  3. Step 3: Cross multiply
    880,861.60x = 1,321,292.40 × 872,567.20
  4. Step 4: Simplify right side
    880,861.60x = 1,152,916,409,849.28
  5. Step 5: Solve for x
    x = 1,152,916,409,849.28/880,861.60
  6. Step 6: Final answer
    x = 1,308,850.80

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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.