Home / 860,620.10-1,290,930.15-661,943.30

Finding the Fourth Proportional to 860,620.10, 1,290,930.15 and 661,943.30

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Solution

The fourth proportional to 860,620.10, 1,290,930.15 and 661,943.30 is: 992,914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,620.10 : 1,290,930.15 = 661,943.30 : x
  2. Step 2: Convert to fraction form
    860,620.10/1,290,930.15 = 661,943.30/x
  3. Step 3: Cross multiply
    860,620.10x = 1,290,930.15 × 661,943.30
  4. Step 4: Simplify right side
    860,620.10x = 854,522,563,560.50
  5. Step 5: Solve for x
    x = 854,522,563,560.50/860,620.10
  6. Step 6: Final answer
    x = 992,914.95

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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.