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Finding the Fourth Proportional to 666,747,793.80, 1,000,121,690.70 and 629,334,347.40

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Solution

The fourth proportional to 666,747,793.80, 1,000,121,690.70 and 629,334,347.40 is: 944,001,521.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,747,793.80 : 1,000,121,690.70 = 629,334,347.40 : x
  2. Step 2: Convert to fraction form
    666,747,793.80/1,000,121,690.70 = 629,334,347.40/x
  3. Step 3: Cross multiply
    666,747,793.80x = 1,000,121,690.70 × 629,334,347.40
  4. Step 4: Simplify right side
    666,747,793.80x = 629,410,931,537,269,120
  5. Step 5: Solve for x
    x = 629,410,931,537,269,120/666,747,793.80
  6. Step 6: Final answer
    x = 944,001,521.10

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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.