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Finding the Fourth Proportional to 605,625.40, 910,406.40 and 519,020.20

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Solution

The fourth proportional to 605,625.40, 910,406.40 and 519,020.20 is: 780,217.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,625.40 : 910,406.40 = 519,020.20 : x
  2. Step 2: Convert to fraction form
    605,625.40/910,406.40 = 519,020.20/x
  3. Step 3: Cross multiply
    605,625.40x = 910,406.40 × 519,020.20
  4. Step 4: Simplify right side
    605,625.40x = 472,519,311,809.28
  5. Step 5: Solve for x
    x = 472,519,311,809.28/605,625.40
  6. Step 6: Final answer
    x = 780,217.13

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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.