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Finding the Fourth Proportional to 498,528.08, 687,863.64 and 317,174

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Solution

The fourth proportional to 498,528.08, 687,863.64 and 317,174 is: 437,633.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,528.08 : 687,863.64 = 317,174 : x
  2. Step 2: Convert to fraction form
    498,528.08/687,863.64 = 317,174/x
  3. Step 3: Cross multiply
    498,528.08x = 687,863.64 × 317,174
  4. Step 4: Simplify right side
    498,528.08x = 218,172,462,153.36
  5. Step 5: Solve for x
    x = 218,172,462,153.36/498,528.08
  6. Step 6: Final answer
    x = 437,633.25

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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.