Home / 739,960.38-1,021,145.32-400,428.63

Finding the Fourth Proportional to 739,960.38, 1,021,145.32 and 400,428.63

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Solution

The fourth proportional to 739,960.38, 1,021,145.32 and 400,428.63 is: 552,591.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,960.38 : 1,021,145.32 = 400,428.63 : x
  2. Step 2: Convert to fraction form
    739,960.38/1,021,145.32 = 400,428.63/x
  3. Step 3: Cross multiply
    739,960.38x = 1,021,145.32 × 400,428.63
  4. Step 4: Simplify right side
    739,960.38x = 408,895,821,518.51
  5. Step 5: Solve for x
    x = 408,895,821,518.51/739,960.38
  6. Step 6: Final answer
    x = 552,591.51

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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.