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Finding the Fourth Proportional to 520,851.87, 718,563.96 and 339,500.16

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Solution

The fourth proportional to 520,851.87, 718,563.96 and 339,500.16 is: 468,372.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,851.87 : 718,563.96 = 339,500.16 : x
  2. Step 2: Convert to fraction form
    520,851.87/718,563.96 = 339,500.16/x
  3. Step 3: Cross multiply
    520,851.87x = 718,563.96 × 339,500.16
  4. Step 4: Simplify right side
    520,851.87x = 243,952,579,390.23
  5. Step 5: Solve for x
    x = 243,952,579,390.23/520,851.87
  6. Step 6: Final answer
    x = 468,372.28

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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.