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Finding the Fourth Proportional to 542,994.40, 814,491.60 and 342,665.20

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Solution

The fourth proportional to 542,994.40, 814,491.60 and 342,665.20 is: 513,997.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,994.40 : 814,491.60 = 342,665.20 : x
  2. Step 2: Convert to fraction form
    542,994.40/814,491.60 = 342,665.20/x
  3. Step 3: Cross multiply
    542,994.40x = 814,491.60 × 342,665.20
  4. Step 4: Simplify right side
    542,994.40x = 279,097,927,012.32
  5. Step 5: Solve for x
    x = 279,097,927,012.32/542,994.40
  6. Step 6: Final answer
    x = 513,997.80

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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.