Home / 1,220,963.25-1,684,929.30-684,419.25

Finding the Fourth Proportional to 1,220,963.25, 1,684,929.30 and 684,419.25

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Solution

The fourth proportional to 1,220,963.25, 1,684,929.30 and 684,419.25 is: 944,498.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,963.25 : 1,684,929.30 = 684,419.25 : x
  2. Step 2: Convert to fraction form
    1,220,963.25/1,684,929.30 = 684,419.25/x
  3. Step 3: Cross multiply
    1,220,963.25x = 1,684,929.30 × 684,419.25
  4. Step 4: Simplify right side
    1,220,963.25x = 1,153,198,047,809.03
  5. Step 5: Solve for x
    x = 1,153,198,047,809.03/1,220,963.25
  6. Step 6: Final answer
    x = 944,498.57

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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.