Home / 1,315,153.48-1,971,143.82-640,223.24

Finding the Fourth Proportional to 1,315,153.48, 1,971,143.82 and 640,223.24

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Solution

The fourth proportional to 1,315,153.48, 1,971,143.82 and 640,223.24 is: 959,562.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,153.48 : 1,971,143.82 = 640,223.24 : x
  2. Step 2: Convert to fraction form
    1,315,153.48/1,971,143.82 = 640,223.24/x
  3. Step 3: Cross multiply
    1,315,153.48x = 1,971,143.82 × 640,223.24
  4. Step 4: Simplify right side
    1,315,153.48x = 1,261,972,082,946.38
  5. Step 5: Solve for x
    x = 1,261,972,082,946.38/1,315,153.48
  6. Step 6: Final answer
    x = 959,562.59

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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.