Home / 2,128,605.40-3,195,240.90-1,330,787.80

Finding the Fourth Proportional to 2,128,605.40, 3,195,240.90 and 1,330,787.80

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Solution

The fourth proportional to 2,128,605.40, 3,195,240.90 and 1,330,787.80 is: 1,997,640.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,605.40 : 3,195,240.90 = 1,330,787.80 : x
  2. Step 2: Convert to fraction form
    2,128,605.40/3,195,240.90 = 1,330,787.80/x
  3. Step 3: Cross multiply
    2,128,605.40x = 3,195,240.90 × 1,330,787.80
  4. Step 4: Simplify right side
    2,128,605.40x = 4,252,187,607,781.02
  5. Step 5: Solve for x
    x = 4,252,187,607,781.02/2,128,605.40
  6. Step 6: Final answer
    x = 1,997,640.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.