Home / 1,387,003.40-2,080,505.10-489,458.60

Finding the Fourth Proportional to 1,387,003.40, 2,080,505.10 and 489,458.60

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Solution

The fourth proportional to 1,387,003.40, 2,080,505.10 and 489,458.60 is: 734,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,003.40 : 2,080,505.10 = 489,458.60 : x
  2. Step 2: Convert to fraction form
    1,387,003.40/2,080,505.10 = 489,458.60/x
  3. Step 3: Cross multiply
    1,387,003.40x = 2,080,505.10 × 489,458.60
  4. Step 4: Simplify right side
    1,387,003.40x = 1,018,321,113,538.86
  5. Step 5: Solve for x
    x = 1,018,321,113,538.86/1,387,003.40
  6. Step 6: Final answer
    x = 734,187.90

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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.