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Finding the Fourth Proportional to 648,212.60, 971,492.70 and 363,902.60

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Solution

The fourth proportional to 648,212.60, 971,492.70 and 363,902.60 is: 545,390.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,212.60 : 971,492.70 = 363,902.60 : x
  2. Step 2: Convert to fraction form
    648,212.60/971,492.70 = 363,902.60/x
  3. Step 3: Cross multiply
    648,212.60x = 971,492.70 × 363,902.60
  4. Step 4: Simplify right side
    648,212.60x = 353,528,719,411.02
  5. Step 5: Solve for x
    x = 353,528,719,411.02/648,212.60
  6. Step 6: Final answer
    x = 545,390.08

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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.