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Finding the Fourth Proportional to 630,392,458.40, 945,588,687.60 and 221,448,608.90

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Solution

The fourth proportional to 630,392,458.40, 945,588,687.60 and 221,448,608.90 is: 332,172,913.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,392,458.40 : 945,588,687.60 = 221,448,608.90 : x
  2. Step 2: Convert to fraction form
    630,392,458.40/945,588,687.60 = 221,448,608.90/x
  3. Step 3: Cross multiply
    630,392,458.40x = 945,588,687.60 × 221,448,608.90
  4. Step 4: Simplify right side
    630,392,458.40x = 209,399,299,460,596,704
  5. Step 5: Solve for x
    x = 209,399,299,460,596,704/630,392,458.40
  6. Step 6: Final answer
    x = 332,172,913.35

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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.