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Finding the Fourth Proportional to 694,079.33, 957,878.29 and 388,184.18

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Solution

The fourth proportional to 694,079.33, 957,878.29 and 388,184.18 is: 535,721.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,079.33 : 957,878.29 = 388,184.18 : x
  2. Step 2: Convert to fraction form
    694,079.33/957,878.29 = 388,184.18/x
  3. Step 3: Cross multiply
    694,079.33x = 957,878.29 × 388,184.18
  4. Step 4: Simplify right side
    694,079.33x = 371,833,194,171.91
  5. Step 5: Solve for x
    x = 371,833,194,171.91/694,079.33
  6. Step 6: Final answer
    x = 535,721.46

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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.