Home / 2,139,640.40-3,209,606.40-680,571.20

Finding the Fourth Proportional to 2,139,640.40, 3,209,606.40 and 680,571.20

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Solution

The fourth proportional to 2,139,640.40, 3,209,606.40 and 680,571.20 is: 1,020,903.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139,640.40 : 3,209,606.40 = 680,571.20 : x
  2. Step 2: Convert to fraction form
    2,139,640.40/3,209,606.40 = 680,571.20/x
  3. Step 3: Cross multiply
    2,139,640.40x = 3,209,606.40 × 680,571.20
  4. Step 4: Simplify right side
    2,139,640.40x = 2,184,365,679,175.68
  5. Step 5: Solve for x
    x = 2,184,365,679,175.68/2,139,640.40
  6. Step 6: Final answer
    x = 1,020,903.18

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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.