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Finding the Fourth Proportional to 577,785.48, 866,775 and 198,690.84

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Solution

The fourth proportional to 577,785.48, 866,775 and 198,690.84 is: 298,069.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,785.48 : 866,775 = 198,690.84 : x
  2. Step 2: Convert to fraction form
    577,785.48/866,775 = 198,690.84/x
  3. Step 3: Cross multiply
    577,785.48x = 866,775 × 198,690.84
  4. Step 4: Simplify right side
    577,785.48x = 172,220,252,841
  5. Step 5: Solve for x
    x = 172,220,252,841/577,785.48
  6. Step 6: Final answer
    x = 298,069.54

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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.