Home / 1,270,143.72-1,752,738.48-689,353.68

Finding the Fourth Proportional to 1,270,143.72, 1,752,738.48 and 689,353.68

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Solution

The fourth proportional to 1,270,143.72, 1,752,738.48 and 689,353.68 is: 951,275.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,143.72 : 1,752,738.48 = 689,353.68 : x
  2. Step 2: Convert to fraction form
    1,270,143.72/1,752,738.48 = 689,353.68/x
  3. Step 3: Cross multiply
    1,270,143.72x = 1,752,738.48 × 689,353.68
  4. Step 4: Simplify right side
    1,270,143.72x = 1,208,256,721,265.61
  5. Step 5: Solve for x
    x = 1,208,256,721,265.61/1,270,143.72
  6. Step 6: Final answer
    x = 951,275.59

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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.