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Finding the Fourth Proportional to 459,506.40, 687,704.40 and 403,519.20

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Solution

The fourth proportional to 459,506.40, 687,704.40 and 403,519.20 is: 603,913.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,506.40 : 687,704.40 = 403,519.20 : x
  2. Step 2: Convert to fraction form
    459,506.40/687,704.40 = 403,519.20/x
  3. Step 3: Cross multiply
    459,506.40x = 687,704.40 × 403,519.20
  4. Step 4: Simplify right side
    459,506.40x = 277,501,929,324.48
  5. Step 5: Solve for x
    x = 277,501,929,324.48/459,506.40
  6. Step 6: Final answer
    x = 603,913.09

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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.