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Finding the Fourth Proportional to 1,248,941.72, 1,723,581.29 and 765,413.44

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Solution

The fourth proportional to 1,248,941.72, 1,723,581.29 and 765,413.44 is: 1,056,296.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,941.72 : 1,723,581.29 = 765,413.44 : x
  2. Step 2: Convert to fraction form
    1,248,941.72/1,723,581.29 = 765,413.44/x
  3. Step 3: Cross multiply
    1,248,941.72x = 1,723,581.29 × 765,413.44
  4. Step 4: Simplify right side
    1,248,941.72x = 1,319,252,284,298.54
  5. Step 5: Solve for x
    x = 1,319,252,284,298.54/1,248,941.72
  6. Step 6: Final answer
    x = 1,056,296.11

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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.