Home / 819,813.30-1,221,570.24-730,379.58

Finding the Fourth Proportional to 819,813.30, 1,221,570.24 and 730,379.58

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Solution

The fourth proportional to 819,813.30, 1,221,570.24 and 730,379.58 is: 1,088,308.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,813.30 : 1,221,570.24 = 730,379.58 : x
  2. Step 2: Convert to fraction form
    819,813.30/1,221,570.24 = 730,379.58/x
  3. Step 3: Cross multiply
    819,813.30x = 1,221,570.24 × 730,379.58
  4. Step 4: Simplify right side
    819,813.30x = 892,209,958,831.70
  5. Step 5: Solve for x
    x = 892,209,958,831.70/819,813.30
  6. Step 6: Final answer
    x = 1,088,308.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.