Home / 1,186,507.82-1,637,376.85-642,642.23

Finding the Fourth Proportional to 1,186,507.82, 1,637,376.85 and 642,642.23

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Solution

The fourth proportional to 1,186,507.82, 1,637,376.85 and 642,642.23 is: 886,844.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,507.82 : 1,637,376.85 = 642,642.23 : x
  2. Step 2: Convert to fraction form
    1,186,507.82/1,637,376.85 = 642,642.23/x
  3. Step 3: Cross multiply
    1,186,507.82x = 1,637,376.85 × 642,642.23
  4. Step 4: Simplify right side
    1,186,507.82x = 1,052,247,510,234.38
  5. Step 5: Solve for x
    x = 1,052,247,510,234.38/1,186,507.82
  6. Step 6: Final answer
    x = 886,844.14

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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.