Home / 739,960.41-1,021,145.36-400,428.66

Finding the Fourth Proportional to 739,960.41, 1,021,145.36 and 400,428.66

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Solution

The fourth proportional to 739,960.41, 1,021,145.36 and 400,428.66 is: 552,591.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,960.41 : 1,021,145.36 = 400,428.66 : x
  2. Step 2: Convert to fraction form
    739,960.41/1,021,145.36 = 400,428.66/x
  3. Step 3: Cross multiply
    739,960.41x = 1,021,145.36 × 400,428.66
  4. Step 4: Simplify right side
    739,960.41x = 408,895,869,171.09
  5. Step 5: Solve for x
    x = 408,895,869,171.09/739,960.41
  6. Step 6: Final answer
    x = 552,591.55

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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.