Home / 661,888,316.76-913,376,400.78-379,428,262.80

Finding the Fourth Proportional to 661,888,316.76, 913,376,400.78 and 379,428,262.80

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Solution

The fourth proportional to 661,888,316.76, 913,376,400.78 and 379,428,262.80 is: 523,594,105.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,888,316.76 : 913,376,400.78 = 379,428,262.80 : x
  2. Step 2: Convert to fraction form
    661,888,316.76/913,376,400.78 = 379,428,262.80/x
  3. Step 3: Cross multiply
    661,888,316.76x = 913,376,400.78 × 379,428,262.80
  4. Step 4: Simplify right side
    661,888,316.76x = 346,560,821,030,471,936
  5. Step 5: Solve for x
    x = 346,560,821,030,471,936/661,888,316.76
  6. Step 6: Final answer
    x = 523,594,105.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.