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Finding the Fourth Proportional to 667,803.74, 922,791.15 and 486,200.39

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Solution

The fourth proportional to 667,803.74, 922,791.15 and 486,200.39 is: 671,846.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,803.74 : 922,791.15 = 486,200.39 : x
  2. Step 2: Convert to fraction form
    667,803.74/922,791.15 = 486,200.39/x
  3. Step 3: Cross multiply
    667,803.74x = 922,791.15 × 486,200.39
  4. Step 4: Simplify right side
    667,803.74x = 448,661,412,404.59
  5. Step 5: Solve for x
    x = 448,661,412,404.59/667,803.74
  6. Step 6: Final answer
    x = 671,846.22

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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.