Home / 1,189,168.60-1,640,670.91-665,802.09

Finding the Fourth Proportional to 1,189,168.60, 1,640,670.91 and 665,802.09

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Solution

The fourth proportional to 1,189,168.60, 1,640,670.91 and 665,802.09 is: 918,593.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,168.60 : 1,640,670.91 = 665,802.09 : x
  2. Step 2: Convert to fraction form
    1,189,168.60/1,640,670.91 = 665,802.09/x
  3. Step 3: Cross multiply
    1,189,168.60x = 1,640,670.91 × 665,802.09
  4. Step 4: Simplify right side
    1,189,168.60x = 1,092,362,120,880.20
  5. Step 5: Solve for x
    x = 1,092,362,120,880.20/1,189,168.60
  6. Step 6: Final answer
    x = 918,593.14

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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.