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Finding the Fourth Proportional to 576,088.80, 794,999.16 and 321,439.20

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Solution

The fourth proportional to 576,088.80, 794,999.16 and 321,439.20 is: 443,584.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,088.80 : 794,999.16 = 321,439.20 : x
  2. Step 2: Convert to fraction form
    576,088.80/794,999.16 = 321,439.20/x
  3. Step 3: Cross multiply
    576,088.80x = 794,999.16 × 321,439.20
  4. Step 4: Simplify right side
    576,088.80x = 255,543,893,991.07
  5. Step 5: Solve for x
    x = 255,543,893,991.07/576,088.80
  6. Step 6: Final answer
    x = 443,584.21

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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.