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Finding the Fourth Proportional to 718,388.38, 989,553.27 and 548,327.26

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Solution

The fourth proportional to 718,388.38, 989,553.27 and 548,327.26 is: 755,300.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,388.38 : 989,553.27 = 548,327.26 : x
  2. Step 2: Convert to fraction form
    718,388.38/989,553.27 = 548,327.26/x
  3. Step 3: Cross multiply
    718,388.38x = 989,553.27 × 548,327.26
  4. Step 4: Simplify right side
    718,388.38x = 542,599,033,163.14
  5. Step 5: Solve for x
    x = 542,599,033,163.14/718,388.38
  6. Step 6: Final answer
    x = 755,300.40

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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.