Home / 628,651.16-867,557.33-387,073.11

Finding the Fourth Proportional to 628,651.16, 867,557.33 and 387,073.11

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Solution

The fourth proportional to 628,651.16, 867,557.33 and 387,073.11 is: 534,172.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,651.16 : 867,557.33 = 387,073.11 : x
  2. Step 2: Convert to fraction form
    628,651.16/867,557.33 = 387,073.11/x
  3. Step 3: Cross multiply
    628,651.16x = 867,557.33 × 387,073.11
  4. Step 4: Simplify right side
    628,651.16x = 335,808,118,773.18
  5. Step 5: Solve for x
    x = 335,808,118,773.18/628,651.16
  6. Step 6: Final answer
    x = 534,172.43

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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.