Home / 1,220,810.28-1,684,374.57-961,884.51

Finding the Fourth Proportional to 1,220,810.28, 1,684,374.57 and 961,884.51

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Solution

The fourth proportional to 1,220,810.28, 1,684,374.57 and 961,884.51 is: 1,327,129.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,810.28 : 1,684,374.57 = 961,884.51 : x
  2. Step 2: Convert to fraction form
    1,220,810.28/1,684,374.57 = 961,884.51/x
  3. Step 3: Cross multiply
    1,220,810.28x = 1,684,374.57 × 961,884.51
  4. Step 4: Simplify right side
    1,220,810.28x = 1,620,173,807,920.91
  5. Step 5: Solve for x
    x = 1,620,173,807,920.91/1,220,810.28
  6. Step 6: Final answer
    x = 1,327,129.89

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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.