Home / 1,428,871.36-2,143,306.72-431,599.36

Finding the Fourth Proportional to 1,428,871.36, 2,143,306.72 and 431,599.36

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Solution

The fourth proportional to 1,428,871.36, 2,143,306.72 and 431,599.36 is: 647,398.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,871.36 : 2,143,306.72 = 431,599.36 : x
  2. Step 2: Convert to fraction form
    1,428,871.36/2,143,306.72 = 431,599.36/x
  3. Step 3: Cross multiply
    1,428,871.36x = 2,143,306.72 × 431,599.36
  4. Step 4: Simplify right side
    1,428,871.36x = 925,049,808,635.70
  5. Step 5: Solve for x
    x = 925,049,808,635.70/1,428,871.36
  6. Step 6: Final answer
    x = 647,398.94

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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.