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Finding the Fourth Proportional to 558,647.14, 770,950.44 and 316,939.90

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Solution

The fourth proportional to 558,647.14, 770,950.44 and 316,939.90 is: 437,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,647.14 : 770,950.44 = 316,939.90 : x
  2. Step 2: Convert to fraction form
    558,647.14/770,950.44 = 316,939.90/x
  3. Step 3: Cross multiply
    558,647.14x = 770,950.44 × 316,939.90
  4. Step 4: Simplify right side
    558,647.14x = 244,344,955,358.56
  5. Step 5: Solve for x
    x = 244,344,955,358.56/558,647.14
  6. Step 6: Final answer
    x = 437,386.93

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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.