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Finding the Fourth Proportional to 474,767.16, 655,120.56 and 378,216.96

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Solution

The fourth proportional to 474,767.16, 655,120.56 and 378,216.96 is: 521,893.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,767.16 : 655,120.56 = 378,216.96 : x
  2. Step 2: Convert to fraction form
    474,767.16/655,120.56 = 378,216.96/x
  3. Step 3: Cross multiply
    474,767.16x = 655,120.56 × 378,216.96
  4. Step 4: Simplify right side
    474,767.16x = 247,777,706,636.70
  5. Step 5: Solve for x
    x = 247,777,706,636.70/474,767.16
  6. Step 6: Final answer
    x = 521,893.10

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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.