Home / 689,641.47-951,747.98-383,786.01

Finding the Fourth Proportional to 689,641.47, 951,747.98 and 383,786.01

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Solution

The fourth proportional to 689,641.47, 951,747.98 and 383,786.01 is: 529,648.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,641.47 : 951,747.98 = 383,786.01 : x
  2. Step 2: Convert to fraction form
    689,641.47/951,747.98 = 383,786.01/x
  3. Step 3: Cross multiply
    689,641.47x = 951,747.98 × 383,786.01
  4. Step 4: Simplify right side
    689,641.47x = 365,267,557,850.83
  5. Step 5: Solve for x
    x = 365,267,557,850.83/689,641.47
  6. Step 6: Final answer
    x = 529,648.48

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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.