Home / 1,387,108.80-2,080,663.20-722,174.40

Finding the Fourth Proportional to 1,387,108.80, 2,080,663.20 and 722,174.40

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Solution

The fourth proportional to 1,387,108.80, 2,080,663.20 and 722,174.40 is: 1,083,261.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,108.80 : 2,080,663.20 = 722,174.40 : x
  2. Step 2: Convert to fraction form
    1,387,108.80/2,080,663.20 = 722,174.40/x
  3. Step 3: Cross multiply
    1,387,108.80x = 2,080,663.20 × 722,174.40
  4. Step 4: Simplify right side
    1,387,108.80x = 1,502,601,698,062.08
  5. Step 5: Solve for x
    x = 1,502,601,698,062.08/1,387,108.80
  6. Step 6: Final answer
    x = 1,083,261.60

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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.