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Finding the Fourth Proportional to 559,664.37, 772,339.41 and 317,960.21

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Solution

The fourth proportional to 559,664.37, 772,339.41 and 317,960.21 is: 438,786.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,664.37 : 772,339.41 = 317,960.21 : x
  2. Step 2: Convert to fraction form
    559,664.37/772,339.41 = 317,960.21/x
  3. Step 3: Cross multiply
    559,664.37x = 772,339.41 × 317,960.21
  4. Step 4: Simplify right side
    559,664.37x = 245,573,202,925.73
  5. Step 5: Solve for x
    x = 245,573,202,925.73/559,664.37
  6. Step 6: Final answer
    x = 438,786.56

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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.