Home / 739,960.29-1,021,145.19-400,428.54

Finding the Fourth Proportional to 739,960.29, 1,021,145.19 and 400,428.54

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Solution

The fourth proportional to 739,960.29, 1,021,145.19 and 400,428.54 is: 552,591.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,960.29 : 1,021,145.19 = 400,428.54 : x
  2. Step 2: Convert to fraction form
    739,960.29/1,021,145.19 = 400,428.54/x
  3. Step 3: Cross multiply
    739,960.29x = 1,021,145.19 × 400,428.54
  4. Step 4: Simplify right side
    739,960.29x = 408,895,677,559.72
  5. Step 5: Solve for x
    x = 408,895,677,559.72/739,960.29
  6. Step 6: Final answer
    x = 552,591.38

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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.