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Finding the Fourth Proportional to 613,815.72, 846,772.32 and 476,912.76

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Solution

The fourth proportional to 613,815.72, 846,772.32 and 476,912.76 is: 657,911.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,815.72 : 846,772.32 = 476,912.76 : x
  2. Step 2: Convert to fraction form
    613,815.72/846,772.32 = 476,912.76/x
  3. Step 3: Cross multiply
    613,815.72x = 846,772.32 × 476,912.76
  4. Step 4: Simplify right side
    613,815.72x = 403,836,524,222.80
  5. Step 5: Solve for x
    x = 403,836,524,222.80/613,815.72
  6. Step 6: Final answer
    x = 657,911.67

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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.