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Finding the Fourth Proportional to 838,843.60, 1,255,807.80 and 740,539.60

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Solution

The fourth proportional to 838,843.60, 1,255,807.80 and 740,539.60 is: 1,108,639.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,843.60 : 1,255,807.80 = 740,539.60 : x
  2. Step 2: Convert to fraction form
    838,843.60/1,255,807.80 = 740,539.60/x
  3. Step 3: Cross multiply
    838,843.60x = 1,255,807.80 × 740,539.60
  4. Step 4: Simplify right side
    838,843.60x = 929,975,405,888.88
  5. Step 5: Solve for x
    x = 929,975,405,888.88/838,843.60
  6. Step 6: Final answer
    x = 1,108,639.81

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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.