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Finding the Fourth Proportional to 555,918.47, 767,249.76 and 351,988.32

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Solution

The fourth proportional to 555,918.47, 767,249.76 and 351,988.32 is: 485,795.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,918.47 : 767,249.76 = 351,988.32 : x
  2. Step 2: Convert to fraction form
    555,918.47/767,249.76 = 351,988.32/x
  3. Step 3: Cross multiply
    555,918.47x = 767,249.76 × 351,988.32
  4. Step 4: Simplify right side
    555,918.47x = 270,062,954,042.80
  5. Step 5: Solve for x
    x = 270,062,954,042.80/555,918.47
  6. Step 6: Final answer
    x = 485,795.97

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1.5x scale

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.