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Finding the Fourth Proportional to 590,608.80, 885,913.20 and 340,999.20

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Solution

The fourth proportional to 590,608.80, 885,913.20 and 340,999.20 is: 511,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,608.80 : 885,913.20 = 340,999.20 : x
  2. Step 2: Convert to fraction form
    590,608.80/885,913.20 = 340,999.20/x
  3. Step 3: Cross multiply
    590,608.80x = 885,913.20 × 340,999.20
  4. Step 4: Simplify right side
    590,608.80x = 302,095,692,469.44
  5. Step 5: Solve for x
    x = 302,095,692,469.44/590,608.80
  6. Step 6: Final answer
    x = 511,498.80

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Similar ratio
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1.5x scale

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.