Home / 739,969.43-1,021,157.78-400,437.68

Finding the Fourth Proportional to 739,969.43, 1,021,157.78 and 400,437.68

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Solution

The fourth proportional to 739,969.43, 1,021,157.78 and 400,437.68 is: 552,603.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,969.43 : 1,021,157.78 = 400,437.68 : x
  2. Step 2: Convert to fraction form
    739,969.43/1,021,157.78 = 400,437.68/x
  3. Step 3: Cross multiply
    739,969.43x = 1,021,157.78 × 400,437.68
  4. Step 4: Simplify right side
    739,969.43x = 408,910,045,229.17
  5. Step 5: Solve for x
    x = 408,910,045,229.17/739,969.43
  6. Step 6: Final answer
    x = 552,603.97

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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.