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Finding the Fourth Proportional to 518,561.67, 715,662.09 and 314,664.26

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Solution

The fourth proportional to 518,561.67, 715,662.09 and 314,664.26 is: 434,265.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,561.67 : 715,662.09 = 314,664.26 : x
  2. Step 2: Convert to fraction form
    518,561.67/715,662.09 = 314,664.26/x
  3. Step 3: Cross multiply
    518,561.67x = 715,662.09 × 314,664.26
  4. Step 4: Simplify right side
    518,561.67x = 225,193,278,381.59
  5. Step 5: Solve for x
    x = 225,193,278,381.59/518,561.67
  6. Step 6: Final answer
    x = 434,265.18

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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.