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Finding the Fourth Proportional to 640,079,674.40, 960,119,511.60 and 629,876,007.20

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Solution

The fourth proportional to 640,079,674.40, 960,119,511.60 and 629,876,007.20 is: 944,814,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,079,674.40 : 960,119,511.60 = 629,876,007.20 : x
  2. Step 2: Convert to fraction form
    640,079,674.40/960,119,511.60 = 629,876,007.20/x
  3. Step 3: Cross multiply
    640,079,674.40x = 960,119,511.60 × 629,876,007.20
  4. Step 4: Simplify right side
    640,079,674.40x = 604,756,244,401,422,208
  5. Step 5: Solve for x
    x = 604,756,244,401,422,208/640,079,674.40
  6. Step 6: Final answer
    x = 944,814,010.80

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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.