Home / 689,388.25-951,355.74-387,582.25

Finding the Fourth Proportional to 689,388.25, 951,355.74 and 387,582.25

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Solution

The fourth proportional to 689,388.25, 951,355.74 and 387,582.25 is: 534,863.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,388.25 : 951,355.74 = 387,582.25 : x
  2. Step 2: Convert to fraction form
    689,388.25/951,355.74 = 387,582.25/x
  3. Step 3: Cross multiply
    689,388.25x = 951,355.74 × 387,582.25
  4. Step 4: Simplify right side
    689,388.25x = 368,728,598,259.62
  5. Step 5: Solve for x
    x = 368,728,598,259.62/689,388.25
  6. Step 6: Final answer
    x = 534,863.48

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Double scale
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Similar ratio
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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.