Home / 642,531.24-886,698.40-356,056.11

Finding the Fourth Proportional to 642,531.24, 886,698.40 and 356,056.11

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Solution

The fourth proportional to 642,531.24, 886,698.40 and 356,056.11 is: 491,360.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,531.24 : 886,698.40 = 356,056.11 : x
  2. Step 2: Convert to fraction form
    642,531.24/886,698.40 = 356,056.11/x
  3. Step 3: Cross multiply
    642,531.24x = 886,698.40 × 356,056.11
  4. Step 4: Simplify right side
    642,531.24x = 315,714,382,157.08
  5. Step 5: Solve for x
    x = 315,714,382,157.08/642,531.24
  6. Step 6: Final answer
    x = 491,360.36

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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.