Home / 689,865.12-951,989.76-383,931.36

Finding the Fourth Proportional to 689,865.12, 951,989.76 and 383,931.36

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Solution

The fourth proportional to 689,865.12, 951,989.76 and 383,931.36 is: 529,811.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,865.12 : 951,989.76 = 383,931.36 : x
  2. Step 2: Convert to fraction form
    689,865.12/951,989.76 = 383,931.36/x
  3. Step 3: Cross multiply
    689,865.12x = 951,989.76 × 383,931.36
  4. Step 4: Simplify right side
    689,865.12x = 365,498,723,262.87
  5. Step 5: Solve for x
    x = 365,498,723,262.87/689,865.12
  6. Step 6: Final answer
    x = 529,811.86

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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.