Home / 1,220,815.28-1,684,642.95-676,930.92

Finding the Fourth Proportional to 1,220,815.28, 1,684,642.95 and 676,930.92

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Solution

The fourth proportional to 1,220,815.28, 1,684,642.95 and 676,930.92 is: 934,119.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,815.28 : 1,684,642.95 = 676,930.92 : x
  2. Step 2: Convert to fraction form
    1,220,815.28/1,684,642.95 = 676,930.92/x
  3. Step 3: Cross multiply
    1,220,815.28x = 1,684,642.95 × 676,930.92
  4. Step 4: Simplify right side
    1,220,815.28x = 1,140,386,902,015.01
  5. Step 5: Solve for x
    x = 1,140,386,902,015.01/1,220,815.28
  6. Step 6: Final answer
    x = 934,119.13

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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.