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Finding the Fourth Proportional to 558,681.44, 770,997.89 and 316,974.20

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Solution

The fourth proportional to 558,681.44, 770,997.89 and 316,974.20 is: 437,434.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,681.44 : 770,997.89 = 316,974.20 : x
  2. Step 2: Convert to fraction form
    558,681.44/770,997.89 = 316,974.20/x
  3. Step 3: Cross multiply
    558,681.44x = 770,997.89 × 316,974.20
  4. Step 4: Simplify right side
    558,681.44x = 244,386,439,727.06
  5. Step 5: Solve for x
    x = 244,386,439,727.06/558,681.44
  6. Step 6: Final answer
    x = 437,434.33

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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.