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Finding the Fourth Proportional to 474,706.70, 655,037.30 and 378,156.44

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Solution

The fourth proportional to 474,706.70, 655,037.30 and 378,156.44 is: 521,809.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,706.70 : 655,037.30 = 378,156.44 : x
  2. Step 2: Convert to fraction form
    474,706.70/655,037.30 = 378,156.44/x
  3. Step 3: Cross multiply
    474,706.70x = 655,037.30 × 378,156.44
  4. Step 4: Simplify right side
    474,706.70x = 247,706,573,435.21
  5. Step 5: Solve for x
    x = 247,706,573,435.21/474,706.70
  6. Step 6: Final answer
    x = 521,809.73

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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.