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Finding the Fourth Proportional to 518,006.10, 777,114.62 and 218,487.79

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Solution

The fourth proportional to 518,006.10, 777,114.62 and 218,487.79 is: 327,776.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,006.10 : 777,114.62 = 218,487.79 : x
  2. Step 2: Convert to fraction form
    518,006.10/777,114.62 = 218,487.79/x
  3. Step 3: Cross multiply
    518,006.10x = 777,114.62 × 218,487.79
  4. Step 4: Simplify right side
    518,006.10x = 169,790,055,900.49
  5. Step 5: Solve for x
    x = 169,790,055,900.49/518,006.10
  6. Step 6: Final answer
    x = 327,776.17

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1.5x scale

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.