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Finding the Fourth Proportional to 655,856.71, 981,563.04 and 403,297.18

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Solution

The fourth proportional to 655,856.71, 981,563.04 and 403,297.18 is: 603,579.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,856.71 : 981,563.04 = 403,297.18 : x
  2. Step 2: Convert to fraction form
    655,856.71/981,563.04 = 403,297.18/x
  3. Step 3: Cross multiply
    655,856.71x = 981,563.04 × 403,297.18
  4. Step 4: Simplify right side
    655,856.71x = 395,861,606,024.23
  5. Step 5: Solve for x
    x = 395,861,606,024.23/655,856.71
  6. Step 6: Final answer
    x = 603,579.41

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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.