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Finding the Fourth Proportional to 618,516, 853,552.21 and 376,798.50

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Solution

The fourth proportional to 618,516, 853,552.21 and 376,798.50 is: 519,982.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,516 : 853,552.21 = 376,798.50 : x
  2. Step 2: Convert to fraction form
    618,516/853,552.21 = 376,798.50/x
  3. Step 3: Cross multiply
    618,516x = 853,552.21 × 376,798.50
  4. Step 4: Simplify right side
    618,516x = 321,617,190,515.69
  5. Step 5: Solve for x
    x = 321,617,190,515.69/618,516
  6. Step 6: Final answer
    x = 519,982.01

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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.