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Finding the Fourth Proportional to 498,526.08, 687,860.88 and 317,172

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Solution

The fourth proportional to 498,526.08, 687,860.88 and 317,172 is: 437,630.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,526.08 : 687,860.88 = 317,172 : x
  2. Step 2: Convert to fraction form
    498,526.08/687,860.88 = 317,172/x
  3. Step 3: Cross multiply
    498,526.08x = 687,860.88 × 317,172
  4. Step 4: Simplify right side
    498,526.08x = 218,170,211,031.36
  5. Step 5: Solve for x
    x = 218,170,211,031.36/498,526.08
  6. Step 6: Final answer
    x = 437,630.49

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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.