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Finding the Fourth Proportional to 509,958.40, 703,743.30 and 283,603.90

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Solution

The fourth proportional to 509,958.40, 703,743.30 and 283,603.90 is: 391,373.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,958.40 : 703,743.30 = 283,603.90 : x
  2. Step 2: Convert to fraction form
    509,958.40/703,743.30 = 283,603.90/x
  3. Step 3: Cross multiply
    509,958.40x = 703,743.30 × 283,603.90
  4. Step 4: Simplify right side
    509,958.40x = 199,584,344,478.87
  5. Step 5: Solve for x
    x = 199,584,344,478.87/509,958.40
  6. Step 6: Final answer
    x = 391,373.78

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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.