Home / 860,620.60-1,290,930.90-661,943.80

Finding the Fourth Proportional to 860,620.60, 1,290,930.90 and 661,943.80

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Solution

The fourth proportional to 860,620.60, 1,290,930.90 and 661,943.80 is: 992,915.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,620.60 : 1,290,930.90 = 661,943.80 : x
  2. Step 2: Convert to fraction form
    860,620.60/1,290,930.90 = 661,943.80/x
  3. Step 3: Cross multiply
    860,620.60x = 1,290,930.90 × 661,943.80
  4. Step 4: Simplify right side
    860,620.60x = 854,523,705,483.42
  5. Step 5: Solve for x
    x = 854,523,705,483.42/860,620.60
  6. Step 6: Final answer
    x = 992,915.70

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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.