Home / 640,066,138.40-960,099,207.60-613,192,282.40

Finding the Fourth Proportional to 640,066,138.40, 960,099,207.60 and 613,192,282.40

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Solution

The fourth proportional to 640,066,138.40, 960,099,207.60 and 613,192,282.40 is: 919,788,423.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,066,138.40 : 960,099,207.60 = 613,192,282.40 : x
  2. Step 2: Convert to fraction form
    640,066,138.40/960,099,207.60 = 613,192,282.40/x
  3. Step 3: Cross multiply
    640,066,138.40x = 960,099,207.60 × 613,192,282.40
  4. Step 4: Simplify right side
    640,066,138.40x = 588,725,424,438,675,456
  5. Step 5: Solve for x
    x = 588,725,424,438,675,456/640,066,138.40
  6. Step 6: Final answer
    x = 919,788,423.60

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1.5x scale

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.