Home / 1,421,965.71-1,962,233.24-777,257.55

Finding the Fourth Proportional to 1,421,965.71, 1,962,233.24 and 777,257.55

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Solution

The fourth proportional to 1,421,965.71, 1,962,233.24 and 777,257.55 is: 1,072,571.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,965.71 : 1,962,233.24 = 777,257.55 : x
  2. Step 2: Convert to fraction form
    1,421,965.71/1,962,233.24 = 777,257.55/x
  3. Step 3: Cross multiply
    1,421,965.71x = 1,962,233.24 × 777,257.55
  4. Step 4: Simplify right side
    1,421,965.71x = 1,525,160,596,764.67
  5. Step 5: Solve for x
    x = 1,525,160,596,764.67/1,421,965.71
  6. Step 6: Final answer
    x = 1,072,571.99

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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.