Home / 642,531.16-886,698.21-356,056.03

Finding the Fourth Proportional to 642,531.16, 886,698.21 and 356,056.03

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Solution

The fourth proportional to 642,531.16, 886,698.21 and 356,056.03 is: 491,360.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,531.16 : 886,698.21 = 356,056.03 : x
  2. Step 2: Convert to fraction form
    642,531.16/886,698.21 = 356,056.03/x
  3. Step 3: Cross multiply
    642,531.16x = 886,698.21 × 356,056.03
  4. Step 4: Simplify right side
    642,531.16x = 315,714,244,460.71
  5. Step 5: Solve for x
    x = 315,714,244,460.71/642,531.16
  6. Step 6: Final answer
    x = 491,360.21

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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.