Home / 872,558.40-1,308,837.60-860,116.80

Finding the Fourth Proportional to 872,558.40, 1,308,837.60 and 860,116.80

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Solution

The fourth proportional to 872,558.40, 1,308,837.60 and 860,116.80 is: 1,290,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,558.40 : 1,308,837.60 = 860,116.80 : x
  2. Step 2: Convert to fraction form
    872,558.40/1,308,837.60 = 860,116.80/x
  3. Step 3: Cross multiply
    872,558.40x = 1,308,837.60 × 860,116.80
  4. Step 4: Simplify right side
    872,558.40x = 1,125,753,208,231.68
  5. Step 5: Solve for x
    x = 1,125,753,208,231.68/872,558.40
  6. Step 6: Final answer
    x = 1,290,175.20

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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.