Home / 689,785.49-951,897.10-383,856.64

Finding the Fourth Proportional to 689,785.49, 951,897.10 and 383,856.64

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Solution

The fourth proportional to 689,785.49, 951,897.10 and 383,856.64 is: 529,718.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,785.49 : 951,897.10 = 383,856.64 : x
  2. Step 2: Convert to fraction form
    689,785.49/951,897.10 = 383,856.64/x
  3. Step 3: Cross multiply
    689,785.49x = 951,897.10 × 383,856.64
  4. Step 4: Simplify right side
    689,785.49x = 365,392,022,431.74
  5. Step 5: Solve for x
    x = 365,392,022,431.74/689,785.49
  6. Step 6: Final answer
    x = 529,718.34

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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.