Home / 1,640,343.40-2,460,515.10-1,215,190.60

Finding the Fourth Proportional to 1,640,343.40, 2,460,515.10 and 1,215,190.60

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Solution

The fourth proportional to 1,640,343.40, 2,460,515.10 and 1,215,190.60 is: 1,822,785.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,343.40 : 2,460,515.10 = 1,215,190.60 : x
  2. Step 2: Convert to fraction form
    1,640,343.40/2,460,515.10 = 1,215,190.60/x
  3. Step 3: Cross multiply
    1,640,343.40x = 2,460,515.10 × 1,215,190.60
  4. Step 4: Simplify right side
    1,640,343.40x = 2,989,994,820,678.06
  5. Step 5: Solve for x
    x = 2,989,994,820,678.06/1,640,343.40
  6. Step 6: Final answer
    x = 1,822,785.90

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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.