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Finding the Fourth Proportional to 613,912.92, 847,166.70 and 338,261.55

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Solution

The fourth proportional to 613,912.92, 847,166.70 and 338,261.55 is: 466,782.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,912.92 : 847,166.70 = 338,261.55 : x
  2. Step 2: Convert to fraction form
    613,912.92/847,166.70 = 338,261.55/x
  3. Step 3: Cross multiply
    613,912.92x = 847,166.70 × 338,261.55
  4. Step 4: Simplify right side
    613,912.92x = 286,563,921,050.39
  5. Step 5: Solve for x
    x = 286,563,921,050.39/613,912.92
  6. Step 6: Final answer
    x = 466,782.68

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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.