Home / 648,534.76-894,723.78-376,556.20

Finding the Fourth Proportional to 648,534.76, 894,723.78 and 376,556.20

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Solution

The fourth proportional to 648,534.76, 894,723.78 and 376,556.20 is: 519,499.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,534.76 : 894,723.78 = 376,556.20 : x
  2. Step 2: Convert to fraction form
    648,534.76/894,723.78 = 376,556.20/x
  3. Step 3: Cross multiply
    648,534.76x = 894,723.78 × 376,556.20
  4. Step 4: Simplify right side
    648,534.76x = 336,913,786,646.44
  5. Step 5: Solve for x
    x = 336,913,786,646.44/648,534.76
  6. Step 6: Final answer
    x = 519,499.97

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Half scale
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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.