Home / 1,272,077.72-1,755,509.34-699,138.20

Finding the Fourth Proportional to 1,272,077.72, 1,755,509.34 and 699,138.20

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Solution

The fourth proportional to 1,272,077.72, 1,755,509.34 and 699,138.20 is: 964,833.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,077.72 : 1,755,509.34 = 699,138.20 : x
  2. Step 2: Convert to fraction form
    1,272,077.72/1,755,509.34 = 699,138.20/x
  3. Step 3: Cross multiply
    1,272,077.72x = 1,755,509.34 × 699,138.20
  4. Step 4: Simplify right side
    1,272,077.72x = 1,227,343,640,050.79
  5. Step 5: Solve for x
    x = 1,227,343,640,050.79/1,272,077.72
  6. Step 6: Final answer
    x = 964,833.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.