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Finding the Fourth Proportional to 568,490.40, 784,617.84 and 339,061.68

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Solution

The fourth proportional to 568,490.40, 784,617.84 and 339,061.68 is: 467,965.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,490.40 : 784,617.84 = 339,061.68 : x
  2. Step 2: Convert to fraction form
    568,490.40/784,617.84 = 339,061.68/x
  3. Step 3: Cross multiply
    568,490.40x = 784,617.84 × 339,061.68
  4. Step 4: Simplify right side
    568,490.40x = 266,033,842,988.37
  5. Step 5: Solve for x
    x = 266,033,842,988.37/568,490.40
  6. Step 6: Final answer
    x = 467,965.41

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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.