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Finding the Fourth Proportional to 689,362.06, 951,305.97 and 383,431.86

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Solution

The fourth proportional to 689,362.06, 951,305.97 and 383,431.86 is: 529,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,362.06 : 951,305.97 = 383,431.86 : x
  2. Step 2: Convert to fraction form
    689,362.06/951,305.97 = 383,431.86/x
  3. Step 3: Cross multiply
    689,362.06x = 951,305.97 × 383,431.86
  4. Step 4: Simplify right side
    689,362.06x = 364,761,010,832.52
  5. Step 5: Solve for x
    x = 364,761,010,832.52/689,362.06
  6. Step 6: Final answer
    x = 529,128.35

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1.5x scale

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.