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Finding the Fourth Proportional to 636,727.80, 878,679.45 and 350,241.60

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Solution

The fourth proportional to 636,727.80, 878,679.45 and 350,241.60 is: 483,330.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,727.80 : 878,679.45 = 350,241.60 : x
  2. Step 2: Convert to fraction form
    636,727.80/878,679.45 = 350,241.60/x
  3. Step 3: Cross multiply
    636,727.80x = 878,679.45 × 350,241.60
  4. Step 4: Simplify right side
    636,727.80x = 307,750,096,455.12
  5. Step 5: Solve for x
    x = 307,750,096,455.12/636,727.80
  6. Step 6: Final answer
    x = 483,330.70

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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.