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Finding the Fourth Proportional to 640,667,859.75, 960,904,690.69 and 174,365,620.71

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Solution

The fourth proportional to 640,667,859.75, 960,904,690.69 and 174,365,620.71 is: 261,522,004.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,667,859.75 : 960,904,690.69 = 174,365,620.71 : x
  2. Step 2: Convert to fraction form
    640,667,859.75/960,904,690.69 = 174,365,620.71/x
  3. Step 3: Cross multiply
    640,667,859.75x = 960,904,690.69 × 174,365,620.71
  4. Step 4: Simplify right side
    640,667,859.75x = 167,548,742,839,569,696
  5. Step 5: Solve for x
    x = 167,548,742,839,569,696/640,667,859.75
  6. Step 6: Final answer
    x = 261,522,004.40

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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.