Home / 411,536.55-618,617.03-387,916.95

Finding the Fourth Proportional to 411,536.55, 618,617.03 and 387,916.95

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Solution

The fourth proportional to 411,536.55, 618,617.03 and 387,916.95 is: 583,112.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,536.55 : 618,617.03 = 387,916.95 : x
  2. Step 2: Convert to fraction form
    411,536.55/618,617.03 = 387,916.95/x
  3. Step 3: Cross multiply
    411,536.55x = 618,617.03 × 387,916.95
  4. Step 4: Simplify right side
    411,536.55x = 239,972,029,556.07
  5. Step 5: Solve for x
    x = 239,972,029,556.07/411,536.55
  6. Step 6: Final answer
    x = 583,112.31

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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.