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Finding the Fourth Proportional to 636,745.05, 878,703.26 and 350,258.85

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Solution

The fourth proportional to 636,745.05, 878,703.26 and 350,258.85 is: 483,354.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,745.05 : 878,703.26 = 350,258.85 : x
  2. Step 2: Convert to fraction form
    636,745.05/878,703.26 = 350,258.85/x
  3. Step 3: Cross multiply
    636,745.05x = 878,703.26 × 350,258.85
  4. Step 4: Simplify right side
    636,745.05x = 307,773,591,587.56
  5. Step 5: Solve for x
    x = 307,773,591,587.56/636,745.05
  6. Step 6: Final answer
    x = 483,354.51

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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.