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Finding the Fourth Proportional to 613,530, 846,671.40 and 345,263.76

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Solution

The fourth proportional to 613,530, 846,671.40 and 345,263.76 is: 476,463.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,530 : 846,671.40 = 345,263.76 : x
  2. Step 2: Convert to fraction form
    613,530/846,671.40 = 345,263.76/x
  3. Step 3: Cross multiply
    613,530x = 846,671.40 × 345,263.76
  4. Step 4: Simplify right side
    613,530x = 292,324,951,048.46
  5. Step 5: Solve for x
    x = 292,324,951,048.46/613,530
  6. Step 6: Final answer
    x = 476,463.99

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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.