Home / 485,421.80-727,787.10-185,786.60

Finding the Fourth Proportional to 485,421.80, 727,787.10 and 185,786.60

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Solution

The fourth proportional to 485,421.80, 727,787.10 and 185,786.60 is: 278,547.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,421.80 : 727,787.10 = 185,786.60 : x
  2. Step 2: Convert to fraction form
    485,421.80/727,787.10 = 185,786.60/x
  3. Step 3: Cross multiply
    485,421.80x = 727,787.10 × 185,786.60
  4. Step 4: Simplify right side
    485,421.80x = 135,213,090,832.86
  5. Step 5: Solve for x
    x = 135,213,090,832.86/485,421.80
  6. Step 6: Final answer
    x = 278,547.63

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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.