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Finding the Fourth Proportional to 1,292,703.92, 1,939,941.48 and 451,255.52

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Solution

The fourth proportional to 1,292,703.92, 1,939,941.48 and 451,255.52 is: 677,192.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,703.92 : 1,939,941.48 = 451,255.52 : x
  2. Step 2: Convert to fraction form
    1,292,703.92/1,939,941.48 = 451,255.52/x
  3. Step 3: Cross multiply
    1,292,703.92x = 1,939,941.48 × 451,255.52
  4. Step 4: Simplify right side
    1,292,703.92x = 875,409,301,326.97
  5. Step 5: Solve for x
    x = 875,409,301,326.97/1,292,703.92
  6. Step 6: Final answer
    x = 677,192.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.