Home / 1,387,238.15-2,080,810.31-488,656.40

Finding the Fourth Proportional to 1,387,238.15, 2,080,810.31 and 488,656.40

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Solution

The fourth proportional to 1,387,238.15, 2,080,810.31 and 488,656.40 is: 732,968.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,238.15 : 2,080,810.31 = 488,656.40 : x
  2. Step 2: Convert to fraction form
    1,387,238.15/2,080,810.31 = 488,656.40/x
  3. Step 3: Cross multiply
    1,387,238.15x = 2,080,810.31 × 488,656.40
  4. Step 4: Simplify right side
    1,387,238.15x = 1,016,801,275,167.48
  5. Step 5: Solve for x
    x = 1,016,801,275,167.48/1,387,238.15
  6. Step 6: Final answer
    x = 732,968.07

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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.