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Finding the Fourth Proportional to 691,487.40, 954,315.59 and 419,624.46

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Solution

The fourth proportional to 691,487.40, 954,315.59 and 419,624.46 is: 579,119.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,487.40 : 954,315.59 = 419,624.46 : x
  2. Step 2: Convert to fraction form
    691,487.40/954,315.59 = 419,624.46/x
  3. Step 3: Cross multiply
    691,487.40x = 954,315.59 × 419,624.46
  4. Step 4: Simplify right side
    691,487.40x = 400,454,162,025.21
  5. Step 5: Solve for x
    x = 400,454,162,025.21/691,487.40
  6. Step 6: Final answer
    x = 579,119.97

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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.