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Finding the Fourth Proportional to 518,871.80, 715,960.74 and 292,473.56

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Solution

The fourth proportional to 518,871.80, 715,960.74 and 292,473.56 is: 403,567.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,871.80 : 715,960.74 = 292,473.56 : x
  2. Step 2: Convert to fraction form
    518,871.80/715,960.74 = 292,473.56/x
  3. Step 3: Cross multiply
    518,871.80x = 715,960.74 × 292,473.56
  4. Step 4: Simplify right side
    518,871.80x = 209,399,586,448.03
  5. Step 5: Solve for x
    x = 209,399,586,448.03/518,871.80
  6. Step 6: Final answer
    x = 403,567.10

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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.