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Finding the Fourth Proportional to 579,961.80, 800,345.55 and 321,877.62

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Solution

The fourth proportional to 579,961.80, 800,345.55 and 321,877.62 is: 444,190.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,961.80 : 800,345.55 = 321,877.62 : x
  2. Step 2: Convert to fraction form
    579,961.80/800,345.55 = 321,877.62/x
  3. Step 3: Cross multiply
    579,961.80x = 800,345.55 × 321,877.62
  4. Step 4: Simplify right side
    579,961.80x = 257,613,322,018.63
  5. Step 5: Solve for x
    x = 257,613,322,018.63/579,961.80
  6. Step 6: Final answer
    x = 444,190.16

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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.