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Finding the Fourth Proportional to 426,169,620.60, 639,254,430.90 and 196,587,108.60

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Solution

The fourth proportional to 426,169,620.60, 639,254,430.90 and 196,587,108.60 is: 294,880,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,169,620.60 : 639,254,430.90 = 196,587,108.60 : x
  2. Step 2: Convert to fraction form
    426,169,620.60/639,254,430.90 = 196,587,108.60/x
  3. Step 3: Cross multiply
    426,169,620.60x = 639,254,430.90 × 196,587,108.60
  4. Step 4: Simplify right side
    426,169,620.60x = 125,669,180,230,369,488
  5. Step 5: Solve for x
    x = 125,669,180,230,369,488/426,169,620.60
  6. Step 6: Final answer
    x = 294,880,662.90

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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.