Home / 961,721.40-1,442,711.70-330,828.60

Finding the Fourth Proportional to 961,721.40, 1,442,711.70 and 330,828.60

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Solution

The fourth proportional to 961,721.40, 1,442,711.70 and 330,828.60 is: 496,287.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,721.40 : 1,442,711.70 = 330,828.60 : x
  2. Step 2: Convert to fraction form
    961,721.40/1,442,711.70 = 330,828.60/x
  3. Step 3: Cross multiply
    961,721.40x = 1,442,711.70 × 330,828.60
  4. Step 4: Simplify right side
    961,721.40x = 477,290,291,914.62
  5. Step 5: Solve for x
    x = 477,290,291,914.62/961,721.40
  6. Step 6: Final answer
    x = 496,287.48

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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.