Home / 821,196.63-1,231,838.69-260,274.87

Finding the Fourth Proportional to 821,196.63, 1,231,838.69 and 260,274.87

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Solution

The fourth proportional to 821,196.63, 1,231,838.69 and 260,274.87 is: 390,426.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,196.63 : 1,231,838.69 = 260,274.87 : x
  2. Step 2: Convert to fraction form
    821,196.63/1,231,838.69 = 260,274.87/x
  3. Step 3: Cross multiply
    821,196.63x = 1,231,838.69 × 260,274.87
  4. Step 4: Simplify right side
    821,196.63x = 320,616,653,599.35
  5. Step 5: Solve for x
    x = 320,616,653,599.35/821,196.63
  6. Step 6: Final answer
    x = 390,426.17

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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.