Home / 407,877,792.40-611,936,076.17-131,523,448.68

Finding the Fourth Proportional to 407,877,792.40, 611,936,076.17 and 131,523,448.68

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Solution

The fourth proportional to 407,877,792.40, 611,936,076.17 and 131,523,448.68 is: 197,323,670.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,877,792.40 : 611,936,076.17 = 131,523,448.68 : x
  2. Step 2: Convert to fraction form
    407,877,792.40/611,936,076.17 = 131,523,448.68/x
  3. Step 3: Cross multiply
    407,877,792.40x = 611,936,076.17 × 131,523,448.68
  4. Step 4: Simplify right side
    407,877,792.40x = 80,483,943,109,914,384
  5. Step 5: Solve for x
    x = 80,483,943,109,914,384/407,877,792.40
  6. Step 6: Final answer
    x = 197,323,670.49

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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.