Home / 1,220,813.78-1,684,640.88-676,929.42

Finding the Fourth Proportional to 1,220,813.78, 1,684,640.88 and 676,929.42

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Solution

The fourth proportional to 1,220,813.78, 1,684,640.88 and 676,929.42 is: 934,117.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,813.78 : 1,684,640.88 = 676,929.42 : x
  2. Step 2: Convert to fraction form
    1,220,813.78/1,684,640.88 = 676,929.42/x
  3. Step 3: Cross multiply
    1,220,813.78x = 1,684,640.88 × 676,929.42
  4. Step 4: Simplify right side
    1,220,813.78x = 1,140,382,973,806.69
  5. Step 5: Solve for x
    x = 1,140,382,973,806.69/1,220,813.78
  6. Step 6: Final answer
    x = 934,117.06

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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.