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Finding the Fourth Proportional to 689,814.52, 951,924.48 and 383,886

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Solution

The fourth proportional to 689,814.52, 951,924.48 and 383,886 is: 529,751.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,814.52 : 951,924.48 = 383,886 : x
  2. Step 2: Convert to fraction form
    689,814.52/951,924.48 = 383,886/x
  3. Step 3: Cross multiply
    689,814.52x = 951,924.48 × 383,886
  4. Step 4: Simplify right side
    689,814.52x = 365,430,480,929.28
  5. Step 5: Solve for x
    x = 365,430,480,929.28/689,814.52
  6. Step 6: Final answer
    x = 529,751.80

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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.