Home / 1,272,179.69-1,755,621.53-691,402.86

Finding the Fourth Proportional to 1,272,179.69, 1,755,621.53 and 691,402.86

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Solution

The fourth proportional to 1,272,179.69, 1,755,621.53 and 691,402.86 is: 954,143.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,179.69 : 1,755,621.53 = 691,402.86 : x
  2. Step 2: Convert to fraction form
    1,272,179.69/1,755,621.53 = 691,402.86/x
  3. Step 3: Cross multiply
    1,272,179.69x = 1,755,621.53 × 691,402.86
  4. Step 4: Simplify right side
    1,272,179.69x = 1,213,841,744,128.00
  5. Step 5: Solve for x
    x = 1,213,841,744,128.00/1,272,179.69
  6. Step 6: Final answer
    x = 954,143.31

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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.