Home / 1,315,822.32-1,972,143.05-640,892.25

Finding the Fourth Proportional to 1,315,822.32, 1,972,143.05 and 640,892.25

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Solution

The fourth proportional to 1,315,822.32, 1,972,143.05 and 640,892.25 is: 960,563.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,822.32 : 1,972,143.05 = 640,892.25 : x
  2. Step 2: Convert to fraction form
    1,315,822.32/1,972,143.05 = 640,892.25/x
  3. Step 3: Cross multiply
    1,315,822.32x = 1,972,143.05 × 640,892.25
  4. Step 4: Simplify right side
    1,315,822.32x = 1,263,931,193,431.90
  5. Step 5: Solve for x
    x = 1,263,931,193,431.90/1,315,822.32
  6. Step 6: Final answer
    x = 960,563.73

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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.