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Finding the Fourth Proportional to 520,274.22, 780,407.28 and 267,625.50

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Solution

The fourth proportional to 520,274.22, 780,407.28 and 267,625.50 is: 401,436.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,274.22 : 780,407.28 = 267,625.50 : x
  2. Step 2: Convert to fraction form
    520,274.22/780,407.28 = 267,625.50/x
  3. Step 3: Cross multiply
    520,274.22x = 780,407.28 × 267,625.50
  4. Step 4: Simplify right side
    520,274.22x = 208,856,888,513.64
  5. Step 5: Solve for x
    x = 208,856,888,513.64/520,274.22
  6. Step 6: Final answer
    x = 401,436.17

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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.