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Finding the Fourth Proportional to 656,637.80, 984,989.10 and 341,709.80

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Solution

The fourth proportional to 656,637.80, 984,989.10 and 341,709.80 is: 512,581.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,637.80 : 984,989.10 = 341,709.80 : x
  2. Step 2: Convert to fraction form
    656,637.80/984,989.10 = 341,709.80/x
  3. Step 3: Cross multiply
    656,637.80x = 984,989.10 × 341,709.80
  4. Step 4: Simplify right side
    656,637.80x = 336,580,428,363.18
  5. Step 5: Solve for x
    x = 336,580,428,363.18/656,637.80
  6. Step 6: Final answer
    x = 512,581.56

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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.