Home / 739,448.97-1,020,439.56-399,917.22

Finding the Fourth Proportional to 739,448.97, 1,020,439.56 and 399,917.22

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Solution

The fourth proportional to 739,448.97, 1,020,439.56 and 399,917.22 is: 551,885.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,448.97 : 1,020,439.56 = 399,917.22 : x
  2. Step 2: Convert to fraction form
    739,448.97/1,020,439.56 = 399,917.22/x
  3. Step 3: Cross multiply
    739,448.97x = 1,020,439.56 × 399,917.22
  4. Step 4: Simplify right side
    739,448.97x = 408,091,352,013.22
  5. Step 5: Solve for x
    x = 408,091,352,013.22/739,448.97
  6. Step 6: Final answer
    x = 551,885.75

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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.