Home / 2,136,294.71-2,948,012.80-1,218,820.87

Finding the Fourth Proportional to 2,136,294.71, 2,948,012.80 and 1,218,820.87

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Solution

The fourth proportional to 2,136,294.71, 2,948,012.80 and 1,218,820.87 is: 1,681,930.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136,294.71 : 2,948,012.80 = 1,218,820.87 : x
  2. Step 2: Convert to fraction form
    2,136,294.71/2,948,012.80 = 1,218,820.87/x
  3. Step 3: Cross multiply
    2,136,294.71x = 2,948,012.80 × 1,218,820.87
  4. Step 4: Simplify right side
    2,136,294.71x = 3,593,099,515,250.05
  5. Step 5: Solve for x
    x = 3,593,099,515,250.05/2,136,294.71
  6. Step 6: Final answer
    x = 1,681,930.64

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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.