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Finding the Fourth Proportional to 636,797.46, 878,177.34 and 407,427.33

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Solution

The fourth proportional to 636,797.46, 878,177.34 and 407,427.33 is: 561,863.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,797.46 : 878,177.34 = 407,427.33 : x
  2. Step 2: Convert to fraction form
    636,797.46/878,177.34 = 407,427.33/x
  3. Step 3: Cross multiply
    636,797.46x = 878,177.34 × 407,427.33
  4. Step 4: Simplify right side
    636,797.46x = 357,793,448,902.70
  5. Step 5: Solve for x
    x = 357,793,448,902.70/636,797.46
  6. Step 6: Final answer
    x = 561,863.81

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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.