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Finding the Fourth Proportional to 557,104.80, 835,657.20 and 389,143.20

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Solution

The fourth proportional to 557,104.80, 835,657.20 and 389,143.20 is: 583,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,104.80 : 835,657.20 = 389,143.20 : x
  2. Step 2: Convert to fraction form
    557,104.80/835,657.20 = 389,143.20/x
  3. Step 3: Cross multiply
    557,104.80x = 835,657.20 × 389,143.20
  4. Step 4: Simplify right side
    557,104.80x = 325,190,316,911.04
  5. Step 5: Solve for x
    x = 325,190,316,911.04/557,104.80
  6. Step 6: Final answer
    x = 583,714.80

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.