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Finding the Fourth Proportional to 463,367.79, 638,942.58 and 402,399.90

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Solution

The fourth proportional to 463,367.79, 638,942.58 and 402,399.90 is: 554,873.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,367.79 : 638,942.58 = 402,399.90 : x
  2. Step 2: Convert to fraction form
    463,367.79/638,942.58 = 402,399.90/x
  3. Step 3: Cross multiply
    463,367.79x = 638,942.58 × 402,399.90
  4. Step 4: Simplify right side
    463,367.79x = 257,110,430,297.74
  5. Step 5: Solve for x
    x = 257,110,430,297.74/463,367.79
  6. Step 6: Final answer
    x = 554,873.33

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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.