Home / 2,157,912.90-2,976,091.47-1,298,312.55

Finding the Fourth Proportional to 2,157,912.90, 2,976,091.47 and 1,298,312.55

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Solution

The fourth proportional to 2,157,912.90, 2,976,091.47 and 1,298,312.55 is: 1,790,571.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157,912.90 : 2,976,091.47 = 1,298,312.55 : x
  2. Step 2: Convert to fraction form
    2,157,912.90/2,976,091.47 = 1,298,312.55/x
  3. Step 3: Cross multiply
    2,157,912.90x = 2,976,091.47 × 1,298,312.55
  4. Step 4: Simplify right side
    2,157,912.90x = 3,863,896,905,448.95
  5. Step 5: Solve for x
    x = 3,863,896,905,448.95/2,157,912.90
  6. Step 6: Final answer
    x = 1,790,571.30

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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.