Home / 1,428,561.46-1,970,853.60-816,385.80

Finding the Fourth Proportional to 1,428,561.46, 1,970,853.60 and 816,385.80

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Solution

The fourth proportional to 1,428,561.46, 1,970,853.60 and 816,385.80 is: 1,126,291.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,561.46 : 1,970,853.60 = 816,385.80 : x
  2. Step 2: Convert to fraction form
    1,428,561.46/1,970,853.60 = 816,385.80/x
  3. Step 3: Cross multiply
    1,428,561.46x = 1,970,853.60 × 816,385.80
  4. Step 4: Simplify right side
    1,428,561.46x = 1,608,976,892,918.88
  5. Step 5: Solve for x
    x = 1,608,976,892,918.88/1,428,561.46
  6. Step 6: Final answer
    x = 1,126,291.68

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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.