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Finding the Fourth Proportional to 612,314.36, 918,155.11 and 275,066.66

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Solution

The fourth proportional to 612,314.36, 918,155.11 and 275,066.66 is: 412,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,314.36 : 918,155.11 = 275,066.66 : x
  2. Step 2: Convert to fraction form
    612,314.36/918,155.11 = 275,066.66/x
  3. Step 3: Cross multiply
    612,314.36x = 918,155.11 × 275,066.66
  4. Step 4: Simplify right side
    612,314.36x = 252,553,857,634.27
  5. Step 5: Solve for x
    x = 252,553,857,634.27/612,314.36
  6. Step 6: Final answer
    x = 412,457.84

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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.