Home / 745,462.78-1,028,781.92-561,371.78

Finding the Fourth Proportional to 745,462.78, 1,028,781.92 and 561,371.78

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Solution

The fourth proportional to 745,462.78, 1,028,781.92 and 561,371.78 is: 774,725.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,462.78 : 1,028,781.92 = 561,371.78 : x
  2. Step 2: Convert to fraction form
    745,462.78/1,028,781.92 = 561,371.78/x
  3. Step 3: Cross multiply
    745,462.78x = 1,028,781.92 × 561,371.78
  4. Step 4: Simplify right side
    745,462.78x = 577,529,137,662.22
  5. Step 5: Solve for x
    x = 577,529,137,662.22/745,462.78
  6. Step 6: Final answer
    x = 774,725.65

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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.