Home / 613,078.81-919,623.38-213,718.84

Finding the Fourth Proportional to 613,078.81, 919,623.38 and 213,718.84

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Solution

The fourth proportional to 613,078.81, 919,623.38 and 213,718.84 is: 320,580.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,078.81 : 919,623.38 = 213,718.84 : x
  2. Step 2: Convert to fraction form
    613,078.81/919,623.38 = 213,718.84/x
  3. Step 3: Cross multiply
    613,078.81x = 919,623.38 × 213,718.84
  4. Step 4: Simplify right side
    613,078.81x = 196,540,838,642.83
  5. Step 5: Solve for x
    x = 196,540,838,642.83/613,078.81
  6. Step 6: Final answer
    x = 320,580.06

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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.