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Finding the Fourth Proportional to 863,842.42, 1,294,712.84 and 611,195.76

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Solution

The fourth proportional to 863,842.42, 1,294,712.84 and 611,195.76 is: 916,050.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,842.42 : 1,294,712.84 = 611,195.76 : x
  2. Step 2: Convert to fraction form
    863,842.42/1,294,712.84 = 611,195.76/x
  3. Step 3: Cross multiply
    863,842.42x = 1,294,712.84 × 611,195.76
  4. Step 4: Simplify right side
    863,842.42x = 791,322,999,753.55
  5. Step 5: Solve for x
    x = 791,322,999,753.55/863,842.42
  6. Step 6: Final answer
    x = 916,050.17

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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.