Home / 628,616.66-867,551.52-387,040.64

Finding the Fourth Proportional to 628,616.66, 867,551.52 and 387,040.64

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Solution

The fourth proportional to 628,616.66, 867,551.52 and 387,040.64 is: 534,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,616.66 : 867,551.52 = 387,040.64 : x
  2. Step 2: Convert to fraction form
    628,616.66/867,551.52 = 387,040.64/x
  3. Step 3: Cross multiply
    628,616.66x = 867,551.52 × 387,040.64
  4. Step 4: Simplify right side
    628,616.66x = 335,777,695,533.77
  5. Step 5: Solve for x
    x = 335,777,695,533.77/628,616.66
  6. Step 6: Final answer
    x = 534,153.35

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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.