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Finding the Fourth Proportional to 657,634.80, 987,618.60 and 508,238.40

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Solution

The fourth proportional to 657,634.80, 987,618.60 and 508,238.40 is: 763,259.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,634.80 : 987,618.60 = 508,238.40 : x
  2. Step 2: Convert to fraction form
    657,634.80/987,618.60 = 508,238.40/x
  3. Step 3: Cross multiply
    657,634.80x = 987,618.60 × 508,238.40
  4. Step 4: Simplify right side
    657,634.80x = 501,945,697,074.24
  5. Step 5: Solve for x
    x = 501,945,697,074.24/657,634.80
  6. Step 6: Final answer
    x = 763,259.03

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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.