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Finding the Fourth Proportional to 636,365.10, 878,183.98 and 349,904.54

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Solution

The fourth proportional to 636,365.10, 878,183.98 and 349,904.54 is: 482,868.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,365.10 : 878,183.98 = 349,904.54 : x
  2. Step 2: Convert to fraction form
    636,365.10/878,183.98 = 349,904.54/x
  3. Step 3: Cross multiply
    636,365.10x = 878,183.98 × 349,904.54
  4. Step 4: Simplify right side
    636,365.10x = 307,280,561,557.27
  5. Step 5: Solve for x
    x = 307,280,561,557.27/636,365.10
  6. Step 6: Final answer
    x = 482,868.34

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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.