Home / 628,514.76-867,439.62-356,649.60

Finding the Fourth Proportional to 628,514.76, 867,439.62 and 356,649.60

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Solution

The fourth proportional to 628,514.76, 867,439.62 and 356,649.60 is: 492,227.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,514.76 : 867,439.62 = 356,649.60 : x
  2. Step 2: Convert to fraction form
    628,514.76/867,439.62 = 356,649.60/x
  3. Step 3: Cross multiply
    628,514.76x = 867,439.62 × 356,649.60
  4. Step 4: Simplify right side
    628,514.76x = 309,371,993,497.15
  5. Step 5: Solve for x
    x = 309,371,993,497.15/628,514.76
  6. Step 6: Final answer
    x = 492,227.09

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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.