Home / 642,629.44-886,828.64-356,192.64

Finding the Fourth Proportional to 642,629.44, 886,828.64 and 356,192.64

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Solution

The fourth proportional to 642,629.44, 886,828.64 and 356,192.64 is: 491,545.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,629.44 : 886,828.64 = 356,192.64 : x
  2. Step 2: Convert to fraction form
    642,629.44/886,828.64 = 356,192.64/x
  3. Step 3: Cross multiply
    642,629.44x = 886,828.64 × 356,192.64
  4. Step 4: Simplify right side
    642,629.44x = 315,881,834,509.21
  5. Step 5: Solve for x
    x = 315,881,834,509.21/642,629.44
  6. Step 6: Final answer
    x = 491,545.85

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1.5x scale

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.