Home / 1,257,921.78-1,735,884.68-768,709.32

Finding the Fourth Proportional to 1,257,921.78, 1,735,884.68 and 768,709.32

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Solution

The fourth proportional to 1,257,921.78, 1,735,884.68 and 768,709.32 is: 1,060,789.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,921.78 : 1,735,884.68 = 768,709.32 : x
  2. Step 2: Convert to fraction form
    1,257,921.78/1,735,884.68 = 768,709.32/x
  3. Step 3: Cross multiply
    1,257,921.78x = 1,735,884.68 × 768,709.32
  4. Step 4: Simplify right side
    1,257,921.78x = 1,334,390,721,608.10
  5. Step 5: Solve for x
    x = 1,334,390,721,608.10/1,257,921.78
  6. Step 6: Final answer
    x = 1,060,789.91

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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.