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Finding the Fourth Proportional to 661,609,837.60, 992,414,756.40 and 629,865,095.20

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Solution

The fourth proportional to 661,609,837.60, 992,414,756.40 and 629,865,095.20 is: 944,797,642.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,609,837.60 : 992,414,756.40 = 629,865,095.20 : x
  2. Step 2: Convert to fraction form
    661,609,837.60/992,414,756.40 = 629,865,095.20/x
  3. Step 3: Cross multiply
    661,609,837.60x = 992,414,756.40 × 629,865,095.20
  4. Step 4: Simplify right side
    661,609,837.60x = 625,087,415,017,770,880
  5. Step 5: Solve for x
    x = 625,087,415,017,770,880/661,609,837.60
  6. Step 6: Final answer
    x = 944,797,642.80

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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.