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Finding the Fourth Proportional to 713,156.10, 984,009.97 and 422,639.61

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Solution

The fourth proportional to 713,156.10, 984,009.97 and 422,639.61 is: 583,156.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,156.10 : 984,009.97 = 422,639.61 : x
  2. Step 2: Convert to fraction form
    713,156.10/984,009.97 = 422,639.61/x
  3. Step 3: Cross multiply
    713,156.10x = 984,009.97 × 422,639.61
  4. Step 4: Simplify right side
    713,156.10x = 415,881,589,956.91
  5. Step 5: Solve for x
    x = 415,881,589,956.91/713,156.10
  6. Step 6: Final answer
    x = 583,156.46

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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.