Home / 780,908.61-1,171,457.71-219,943.11

Finding the Fourth Proportional to 780,908.61, 1,171,457.71 and 219,943.11

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Solution

The fourth proportional to 780,908.61, 1,171,457.71 and 219,943.11 is: 329,941.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,908.61 : 1,171,457.71 = 219,943.11 : x
  2. Step 2: Convert to fraction form
    780,908.61/1,171,457.71 = 219,943.11/x
  3. Step 3: Cross multiply
    780,908.61x = 1,171,457.71 × 219,943.11
  4. Step 4: Simplify right side
    780,908.61x = 257,654,055,813.99
  5. Step 5: Solve for x
    x = 257,654,055,813.99/780,908.61
  6. Step 6: Final answer
    x = 329,941.37

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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.