Home / 689,628.18-951,691.60-383,717.50

Finding the Fourth Proportional to 689,628.18, 951,691.60 and 383,717.50

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Solution

The fourth proportional to 689,628.18, 951,691.60 and 383,717.50 is: 529,532.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,628.18 : 951,691.60 = 383,717.50 : x
  2. Step 2: Convert to fraction form
    689,628.18/951,691.60 = 383,717.50/x
  3. Step 3: Cross multiply
    689,628.18x = 951,691.60 × 383,717.50
  4. Step 4: Simplify right side
    689,628.18x = 365,180,721,523
  5. Step 5: Solve for x
    x = 365,180,721,523/689,628.18
  6. Step 6: Final answer
    x = 529,532.77

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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.