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Finding the Fourth Proportional to 887,072.60, 1,330,608.90 and 818,643.80

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Solution

The fourth proportional to 887,072.60, 1,330,608.90 and 818,643.80 is: 1,227,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,072.60 : 1,330,608.90 = 818,643.80 : x
  2. Step 2: Convert to fraction form
    887,072.60/1,330,608.90 = 818,643.80/x
  3. Step 3: Cross multiply
    887,072.60x = 1,330,608.90 × 818,643.80
  4. Step 4: Simplify right side
    887,072.60x = 1,089,294,726,209.82
  5. Step 5: Solve for x
    x = 1,089,294,726,209.82/887,072.60
  6. Step 6: Final answer
    x = 1,227,965.70

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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.