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Finding the Fourth Proportional to 418,512.69, 627,674.47 and 118,986.71

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Solution

The fourth proportional to 418,512.69, 627,674.47 and 118,986.71 is: 178,453.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,512.69 : 627,674.47 = 118,986.71 : x
  2. Step 2: Convert to fraction form
    418,512.69/627,674.47 = 118,986.71/x
  3. Step 3: Cross multiply
    418,512.69x = 627,674.47 × 118,986.71
  4. Step 4: Simplify right side
    418,512.69x = 74,684,916,700.45
  5. Step 5: Solve for x
    x = 74,684,916,700.45/418,512.69
  6. Step 6: Final answer
    x = 178,453.17

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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.