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Finding the Fourth Proportional to 524,117.40, 784,361.70 and 313,906.20

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Solution

The fourth proportional to 524,117.40, 784,361.70 and 313,906.20 is: 469,772.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,117.40 : 784,361.70 = 313,906.20 : x
  2. Step 2: Convert to fraction form
    524,117.40/784,361.70 = 313,906.20/x
  3. Step 3: Cross multiply
    524,117.40x = 784,361.70 × 313,906.20
  4. Step 4: Simplify right side
    524,117.40x = 246,216,000,672.54
  5. Step 5: Solve for x
    x = 246,216,000,672.54/524,117.40
  6. Step 6: Final answer
    x = 469,772.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.