Home / 726,507.05-1,002,564.09-420,596.36

Finding the Fourth Proportional to 726,507.05, 1,002,564.09 and 420,596.36

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Solution

The fourth proportional to 726,507.05, 1,002,564.09 and 420,596.36 is: 580,413.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,507.05 : 1,002,564.09 = 420,596.36 : x
  2. Step 2: Convert to fraction form
    726,507.05/1,002,564.09 = 420,596.36/x
  3. Step 3: Cross multiply
    726,507.05x = 1,002,564.09 × 420,596.36
  4. Step 4: Simplify right side
    726,507.05x = 421,674,806,920.71
  5. Step 5: Solve for x
    x = 421,674,806,920.71/726,507.05
  6. Step 6: Final answer
    x = 580,413.92

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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.