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Finding the Fourth Proportional to 508,513.56, 701,884.84 and 317,411.88

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Solution

The fourth proportional to 508,513.56, 701,884.84 and 317,411.88 is: 438,113.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,513.56 : 701,884.84 = 317,411.88 : x
  2. Step 2: Convert to fraction form
    508,513.56/701,884.84 = 317,411.88/x
  3. Step 3: Cross multiply
    508,513.56x = 701,884.84 × 317,411.88
  4. Step 4: Simplify right side
    508,513.56x = 222,786,586,607.90
  5. Step 5: Solve for x
    x = 222,786,586,607.90/508,513.56
  6. Step 6: Final answer
    x = 438,113.36

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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.