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Finding the Fourth Proportional to 578,343.24, 798,105.42 and 320,195.43

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Solution

The fourth proportional to 578,343.24, 798,105.42 and 320,195.43 is: 441,865.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,343.24 : 798,105.42 = 320,195.43 : x
  2. Step 2: Convert to fraction form
    578,343.24/798,105.42 = 320,195.43/x
  3. Step 3: Cross multiply
    578,343.24x = 798,105.42 × 320,195.43
  4. Step 4: Simplify right side
    578,343.24x = 255,549,708,142.23
  5. Step 5: Solve for x
    x = 255,549,708,142.23/578,343.24
  6. Step 6: Final answer
    x = 441,865.13

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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.