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Finding the Fourth Proportional to 612,062.80, 918,094.20 and 412,997.20

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Solution

The fourth proportional to 612,062.80, 918,094.20 and 412,997.20 is: 619,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,062.80 : 918,094.20 = 412,997.20 : x
  2. Step 2: Convert to fraction form
    612,062.80/918,094.20 = 412,997.20/x
  3. Step 3: Cross multiply
    612,062.80x = 918,094.20 × 412,997.20
  4. Step 4: Simplify right side
    612,062.80x = 379,170,333,936.24
  5. Step 5: Solve for x
    x = 379,170,333,936.24/612,062.80
  6. Step 6: Final answer
    x = 619,495.80

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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.