Home / 1,392,675.57-1,921,796.01-772,422.21

Finding the Fourth Proportional to 1,392,675.57, 1,921,796.01 and 772,422.21

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Solution

The fourth proportional to 1,392,675.57, 1,921,796.01 and 772,422.21 is: 1,065,889.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,675.57 : 1,921,796.01 = 772,422.21 : x
  2. Step 2: Convert to fraction form
    1,392,675.57/1,921,796.01 = 772,422.21/x
  3. Step 3: Cross multiply
    1,392,675.57x = 1,921,796.01 × 772,422.21
  4. Step 4: Simplify right side
    1,392,675.57x = 1,484,437,921,213.38
  5. Step 5: Solve for x
    x = 1,484,437,921,213.38/1,392,675.57
  6. Step 6: Final answer
    x = 1,065,889.25

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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.