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Finding the Fourth Proportional to 648,216.60, 971,498.70 and 363,906.60

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Solution

The fourth proportional to 648,216.60, 971,498.70 and 363,906.60 is: 545,396.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,216.60 : 971,498.70 = 363,906.60 : x
  2. Step 2: Convert to fraction form
    648,216.60/971,498.70 = 363,906.60/x
  3. Step 3: Cross multiply
    648,216.60x = 971,498.70 × 363,906.60
  4. Step 4: Simplify right side
    648,216.60x = 353,534,788,821.42
  5. Step 5: Solve for x
    x = 353,534,788,821.42/648,216.60
  6. Step 6: Final answer
    x = 545,396.07

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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.