Home / 628,531.91-867,393.59-356,611.26

Finding the Fourth Proportional to 628,531.91, 867,393.59 and 356,611.26

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Solution

The fourth proportional to 628,531.91, 867,393.59 and 356,611.26 is: 492,134.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,531.91 : 867,393.59 = 356,611.26 : x
  2. Step 2: Convert to fraction form
    628,531.91/867,393.59 = 356,611.26/x
  3. Step 3: Cross multiply
    628,531.91x = 867,393.59 × 356,611.26
  4. Step 4: Simplify right side
    628,531.91x = 309,322,321,045.82
  5. Step 5: Solve for x
    x = 309,322,321,045.82/628,531.91
  6. Step 6: Final answer
    x = 492,134.63

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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.