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Finding the Fourth Proportional to 611,562.15, 843,977.08 and 339,634.56

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Solution

The fourth proportional to 611,562.15, 843,977.08 and 339,634.56 is: 468,707.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,562.15 : 843,977.08 = 339,634.56 : x
  2. Step 2: Convert to fraction form
    611,562.15/843,977.08 = 339,634.56/x
  3. Step 3: Cross multiply
    611,562.15x = 843,977.08 × 339,634.56
  4. Step 4: Simplify right side
    611,562.15x = 286,643,784,215.89
  5. Step 5: Solve for x
    x = 286,643,784,215.89/611,562.15
  6. Step 6: Final answer
    x = 468,707.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.