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Finding the Fourth Proportional to 614,163.68, 921,070.56 and 389,184.56

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Solution

The fourth proportional to 614,163.68, 921,070.56 and 389,184.56 is: 583,665.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,163.68 : 921,070.56 = 389,184.56 : x
  2. Step 2: Convert to fraction form
    614,163.68/921,070.56 = 389,184.56/x
  3. Step 3: Cross multiply
    614,163.68x = 921,070.56 × 389,184.56
  4. Step 4: Simplify right side
    614,163.68x = 358,466,440,622.55
  5. Step 5: Solve for x
    x = 358,466,440,622.55/614,163.68
  6. Step 6: Final answer
    x = 583,665.97

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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.