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Finding the Fourth Proportional to 654,376.40, 979,231.80 and 453,755.60

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Solution

The fourth proportional to 654,376.40, 979,231.80 and 453,755.60 is: 679,015.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,376.40 : 979,231.80 = 453,755.60 : x
  2. Step 2: Convert to fraction form
    654,376.40/979,231.80 = 453,755.60/x
  3. Step 3: Cross multiply
    654,376.40x = 979,231.80 × 453,755.60
  4. Step 4: Simplify right side
    654,376.40x = 444,331,912,948.08
  5. Step 5: Solve for x
    x = 444,331,912,948.08/654,376.40
  6. Step 6: Final answer
    x = 679,015.80

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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.