Home / 689,419.15-951,455.90-383,553.16

Finding the Fourth Proportional to 689,419.15, 951,455.90 and 383,553.16

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Solution

The fourth proportional to 689,419.15, 951,455.90 and 383,553.16 is: 529,335.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,419.15 : 951,455.90 = 383,553.16 : x
  2. Step 2: Convert to fraction form
    689,419.15/951,455.90 = 383,553.16/x
  3. Step 3: Cross multiply
    689,419.15x = 951,455.90 × 383,553.16
  4. Step 4: Simplify right side
    689,419.15x = 364,933,915,625.89
  5. Step 5: Solve for x
    x = 364,933,915,625.89/689,419.15
  6. Step 6: Final answer
    x = 529,335.34

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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.