Home / 2,912,972.78-4,020,121.35-1,689,267.68

Finding the Fourth Proportional to 2,912,972.78, 4,020,121.35 and 1,689,267.68

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Solution

The fourth proportional to 2,912,972.78, 4,020,121.35 and 1,689,267.68 is: 2,331,316.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912,972.78 : 4,020,121.35 = 1,689,267.68 : x
  2. Step 2: Convert to fraction form
    2,912,972.78/4,020,121.35 = 1,689,267.68/x
  3. Step 3: Cross multiply
    2,912,972.78x = 4,020,121.35 × 1,689,267.68
  4. Step 4: Simplify right side
    2,912,972.78x = 6,791,061,066,232.97
  5. Step 5: Solve for x
    x = 6,791,061,066,232.97/2,912,972.78
  6. Step 6: Final answer
    x = 2,331,316.35

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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.