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Finding the Fourth Proportional to 610,785.64, 842,889.26 and 338,871.38

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Solution

The fourth proportional to 610,785.64, 842,889.26 and 338,871.38 is: 467,645.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,785.64 : 842,889.26 = 338,871.38 : x
  2. Step 2: Convert to fraction form
    610,785.64/842,889.26 = 338,871.38/x
  3. Step 3: Cross multiply
    610,785.64x = 842,889.26 × 338,871.38
  4. Step 4: Simplify right side
    610,785.64x = 285,631,046,723.38
  5. Step 5: Solve for x
    x = 285,631,046,723.38/610,785.64
  6. Step 6: Final answer
    x = 467,645.32

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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.