Home / 727,605.40-1,004,125.70-405,315.41

Finding the Fourth Proportional to 727,605.40, 1,004,125.70 and 405,315.41

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Solution

The fourth proportional to 727,605.40, 1,004,125.70 and 405,315.41 is: 559,352.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,605.40 : 1,004,125.70 = 405,315.41 : x
  2. Step 2: Convert to fraction form
    727,605.40/1,004,125.70 = 405,315.41/x
  3. Step 3: Cross multiply
    727,605.40x = 1,004,125.70 × 405,315.41
  4. Step 4: Simplify right side
    727,605.40x = 406,987,612,739.83
  5. Step 5: Solve for x
    x = 406,987,612,739.83/727,605.40
  6. Step 6: Final answer
    x = 559,352.11

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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.