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Finding the Fourth Proportional to 558,989.97, 771,475.89 and 317,350.77

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Solution

The fourth proportional to 558,989.97, 771,475.89 and 317,350.77 is: 437,983.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,989.97 : 771,475.89 = 317,350.77 : x
  2. Step 2: Convert to fraction form
    558,989.97/771,475.89 = 317,350.77/x
  3. Step 3: Cross multiply
    558,989.97x = 771,475.89 × 317,350.77
  4. Step 4: Simplify right side
    558,989.97x = 244,828,467,727.94
  5. Step 5: Solve for x
    x = 244,828,467,727.94/558,989.97
  6. Step 6: Final answer
    x = 437,983.65

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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.