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Finding the Fourth Proportional to 654,340.60, 980,781.90 and 254,848.60

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Solution

The fourth proportional to 654,340.60, 980,781.90 and 254,848.60 is: 381,988.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,340.60 : 980,781.90 = 254,848.60 : x
  2. Step 2: Convert to fraction form
    654,340.60/980,781.90 = 254,848.60/x
  3. Step 3: Cross multiply
    654,340.60x = 980,781.90 × 254,848.60
  4. Step 4: Simplify right side
    654,340.60x = 249,950,894,120.34
  5. Step 5: Solve for x
    x = 249,950,894,120.34/654,340.60
  6. Step 6: Final answer
    x = 381,988.97

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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.