Home / 726,553.90-1,002,530.98-420,570.58

Finding the Fourth Proportional to 726,553.90, 1,002,530.98 and 420,570.58

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Solution

The fourth proportional to 726,553.90, 1,002,530.98 and 420,570.58 is: 580,321.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,553.90 : 1,002,530.98 = 420,570.58 : x
  2. Step 2: Convert to fraction form
    726,553.90/1,002,530.98 = 420,570.58/x
  3. Step 3: Cross multiply
    726,553.90x = 1,002,530.98 × 420,570.58
  4. Step 4: Simplify right side
    726,553.90x = 421,635,033,259.99
  5. Step 5: Solve for x
    x = 421,635,033,259.99/726,553.90
  6. Step 6: Final answer
    x = 580,321.75

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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.