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Finding the Fourth Proportional to 508,911.60, 763,367.40 and 322,748.40

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Solution

The fourth proportional to 508,911.60, 763,367.40 and 322,748.40 is: 484,122.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,911.60 : 763,367.40 = 322,748.40 : x
  2. Step 2: Convert to fraction form
    508,911.60/763,367.40 = 322,748.40/x
  3. Step 3: Cross multiply
    508,911.60x = 763,367.40 × 322,748.40
  4. Step 4: Simplify right side
    508,911.60x = 246,375,606,962.16
  5. Step 5: Solve for x
    x = 246,375,606,962.16/508,911.60
  6. Step 6: Final answer
    x = 484,122.60

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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.