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Finding the Fourth Proportional to 658,434.49, 908,633.91 and 356,628.49

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Solution

The fourth proportional to 658,434.49, 908,633.91 and 356,628.49 is: 492,144.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,434.49 : 908,633.91 = 356,628.49 : x
  2. Step 2: Convert to fraction form
    658,434.49/908,633.91 = 356,628.49/x
  3. Step 3: Cross multiply
    658,434.49x = 908,633.91 × 356,628.49
  4. Step 4: Simplify right side
    658,434.49x = 324,044,739,286.10
  5. Step 5: Solve for x
    x = 324,044,739,286.10/658,434.49
  6. Step 6: Final answer
    x = 492,144.24

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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.