Home / 739,179.68-1,020,067.09-399,647.12

Finding the Fourth Proportional to 739,179.68, 1,020,067.09 and 399,647.12

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Solution

The fourth proportional to 739,179.68, 1,020,067.09 and 399,647.12 is: 551,512.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,179.68 : 1,020,067.09 = 399,647.12 : x
  2. Step 2: Convert to fraction form
    739,179.68/1,020,067.09 = 399,647.12/x
  3. Step 3: Cross multiply
    739,179.68x = 1,020,067.09 × 399,647.12
  4. Step 4: Simplify right side
    739,179.68x = 407,666,868,625.83
  5. Step 5: Solve for x
    x = 407,666,868,625.83/739,179.68
  6. Step 6: Final answer
    x = 551,512.55

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1.5x scale

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.