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Finding the Fourth Proportional to 504,617.40, 757,979.10 and 425,885.40

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Solution

The fourth proportional to 504,617.40, 757,979.10 and 425,885.40 is: 639,716.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,617.40 : 757,979.10 = 425,885.40 : x
  2. Step 2: Convert to fraction form
    504,617.40/757,979.10 = 425,885.40/x
  3. Step 3: Cross multiply
    504,617.40x = 757,979.10 × 425,885.40
  4. Step 4: Simplify right side
    504,617.40x = 322,812,232,195.14
  5. Step 5: Solve for x
    x = 322,812,232,195.14/504,617.40
  6. Step 6: Final answer
    x = 639,716.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.