Home / 1,391,237.28-2,087,034.12-431,756.64

Finding the Fourth Proportional to 1,391,237.28, 2,087,034.12 and 431,756.64

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Solution

The fourth proportional to 1,391,237.28, 2,087,034.12 and 431,756.64 is: 647,690.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,237.28 : 2,087,034.12 = 431,756.64 : x
  2. Step 2: Convert to fraction form
    1,391,237.28/2,087,034.12 = 431,756.64/x
  3. Step 3: Cross multiply
    1,391,237.28x = 2,087,034.12 × 431,756.64
  4. Step 4: Simplify right side
    1,391,237.28x = 901,090,839,216.56
  5. Step 5: Solve for x
    x = 901,090,839,216.56/1,391,237.28
  6. Step 6: Final answer
    x = 647,690.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.