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Finding the Fourth Proportional to 887,070.60, 1,330,605.90 and 818,641.80

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Solution

The fourth proportional to 887,070.60, 1,330,605.90 and 818,641.80 is: 1,227,962.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,070.60 : 1,330,605.90 = 818,641.80 : x
  2. Step 2: Convert to fraction form
    887,070.60/1,330,605.90 = 818,641.80/x
  3. Step 3: Cross multiply
    887,070.60x = 1,330,605.90 × 818,641.80
  4. Step 4: Simplify right side
    887,070.60x = 1,089,289,609,066.62
  5. Step 5: Solve for x
    x = 1,089,289,609,066.62/887,070.60
  6. Step 6: Final answer
    x = 1,227,962.70

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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.