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Finding the Fourth Proportional to 498,968, 688,590.40 and 272,628.08

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Solution

The fourth proportional to 498,968, 688,590.40 and 272,628.08 is: 376,234.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,968 : 688,590.40 = 272,628.08 : x
  2. Step 2: Convert to fraction form
    498,968/688,590.40 = 272,628.08/x
  3. Step 3: Cross multiply
    498,968x = 688,590.40 × 272,628.08
  4. Step 4: Simplify right side
    498,968x = 187,729,078,658.43
  5. Step 5: Solve for x
    x = 187,729,078,658.43/498,968
  6. Step 6: Final answer
    x = 376,234.71

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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.