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Finding the Fourth Proportional to 520,871.36, 718,817.64 and 294,512

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Solution

The fourth proportional to 520,871.36, 718,817.64 and 294,512 is: 406,435.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,871.36 : 718,817.64 = 294,512 : x
  2. Step 2: Convert to fraction form
    520,871.36/718,817.64 = 294,512/x
  3. Step 3: Cross multiply
    520,871.36x = 718,817.64 × 294,512
  4. Step 4: Simplify right side
    520,871.36x = 211,700,420,791.68
  5. Step 5: Solve for x
    x = 211,700,420,791.68/520,871.36
  6. Step 6: Final answer
    x = 406,435.13

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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.