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Finding the Fourth Proportional to 648,148.60, 971,396.70 and 363,838.60

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Solution

The fourth proportional to 648,148.60, 971,396.70 and 363,838.60 is: 545,294.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,148.60 : 971,396.70 = 363,838.60 : x
  2. Step 2: Convert to fraction form
    648,148.60/971,396.70 = 363,838.60/x
  3. Step 3: Cross multiply
    648,148.60x = 971,396.70 × 363,838.60
  4. Step 4: Simplify right side
    648,148.60x = 353,431,615,372.62
  5. Step 5: Solve for x
    x = 353,431,615,372.62/648,148.60
  6. Step 6: Final answer
    x = 545,294.11

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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.