Home / 919,713.09-1,378,642.25-578,400.44

Finding the Fourth Proportional to 919,713.09, 1,378,642.25 and 578,400.44

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Solution

The fourth proportional to 919,713.09, 1,378,642.25 and 578,400.44 is: 867,017.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,713.09 : 1,378,642.25 = 578,400.44 : x
  2. Step 2: Convert to fraction form
    919,713.09/1,378,642.25 = 578,400.44/x
  3. Step 3: Cross multiply
    919,713.09x = 1,378,642.25 × 578,400.44
  4. Step 4: Simplify right side
    919,713.09x = 797,407,274,217.38
  5. Step 5: Solve for x
    x = 797,407,274,217.38/919,713.09
  6. Step 6: Final answer
    x = 867,017.42

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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.