Home / 778,067.11-1,074,000.50-455,881.51

Finding the Fourth Proportional to 778,067.11, 1,074,000.50 and 455,881.51

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Solution

The fourth proportional to 778,067.11, 1,074,000.50 and 455,881.51 is: 629,273.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,067.11 : 1,074,000.50 = 455,881.51 : x
  2. Step 2: Convert to fraction form
    778,067.11/1,074,000.50 = 455,881.51/x
  3. Step 3: Cross multiply
    778,067.11x = 1,074,000.50 × 455,881.51
  4. Step 4: Simplify right side
    778,067.11x = 489,616,969,680.76
  5. Step 5: Solve for x
    x = 489,616,969,680.76/778,067.11
  6. Step 6: Final answer
    x = 629,273.44

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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.