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Finding the Fourth Proportional to 704,857.46, 972,717.80 and 398,933.82

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Solution

The fourth proportional to 704,857.46, 972,717.80 and 398,933.82 is: 550,536.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,857.46 : 972,717.80 = 398,933.82 : x
  2. Step 2: Convert to fraction form
    704,857.46/972,717.80 = 398,933.82/x
  3. Step 3: Cross multiply
    704,857.46x = 972,717.80 × 398,933.82
  4. Step 4: Simplify right side
    704,857.46x = 388,050,027,736.00
  5. Step 5: Solve for x
    x = 388,050,027,736.00/704,857.46
  6. Step 6: Final answer
    x = 550,536.88

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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.