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Finding the Fourth Proportional to 689,732.24, 951,830.28 and 387,926

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Solution

The fourth proportional to 689,732.24, 951,830.28 and 387,926 is: 535,337.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,732.24 : 951,830.28 = 387,926 : x
  2. Step 2: Convert to fraction form
    689,732.24/951,830.28 = 387,926/x
  3. Step 3: Cross multiply
    689,732.24x = 951,830.28 × 387,926
  4. Step 4: Simplify right side
    689,732.24x = 369,239,713,199.28
  5. Step 5: Solve for x
    x = 369,239,713,199.28/689,732.24
  6. Step 6: Final answer
    x = 535,337.76

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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.