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Finding the Fourth Proportional to 1,295,609, 1,787,935.80 and 722,648.76

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Solution

The fourth proportional to 1,295,609, 1,787,935.80 and 722,648.76 is: 997,252.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,609 : 1,787,935.80 = 722,648.76 : x
  2. Step 2: Convert to fraction form
    1,295,609/1,787,935.80 = 722,648.76/x
  3. Step 3: Cross multiply
    1,295,609x = 1,787,935.80 × 722,648.76
  4. Step 4: Simplify right side
    1,295,609x = 1,292,049,588,829.61
  5. Step 5: Solve for x
    x = 1,292,049,588,829.61/1,295,609
  6. Step 6: Final answer
    x = 997,252.71

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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.