Home / 1,386,009.36-1,912,724.28-813,462.48

Finding the Fourth Proportional to 1,386,009.36, 1,912,724.28 and 813,462.48

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Solution

The fourth proportional to 1,386,009.36, 1,912,724.28 and 813,462.48 is: 1,122,596.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,009.36 : 1,912,724.28 = 813,462.48 : x
  2. Step 2: Convert to fraction form
    1,386,009.36/1,912,724.28 = 813,462.48/x
  3. Step 3: Cross multiply
    1,386,009.36x = 1,912,724.28 × 813,462.48
  4. Step 4: Simplify right side
    1,386,009.36x = 1,555,929,436,365.01
  5. Step 5: Solve for x
    x = 1,555,929,436,365.01/1,386,009.36
  6. Step 6: Final answer
    x = 1,122,596.63

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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.