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Finding the Fourth Proportional to 551,880.20, 826,070.70 and 394,416.20

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Solution

The fourth proportional to 551,880.20, 826,070.70 and 394,416.20 is: 590,373.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,880.20 : 826,070.70 = 394,416.20 : x
  2. Step 2: Convert to fraction form
    551,880.20/826,070.70 = 394,416.20/x
  3. Step 3: Cross multiply
    551,880.20x = 826,070.70 × 394,416.20
  4. Step 4: Simplify right side
    551,880.20x = 325,815,666,425.34
  5. Step 5: Solve for x
    x = 325,815,666,425.34/551,880.20
  6. Step 6: Final answer
    x = 590,373.90

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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.