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Finding the Fourth Proportional to 606,920.60, 911,365.05 and 439,615.10

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Solution

The fourth proportional to 606,920.60, 911,365.05 and 439,615.10 is: 660,135.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,920.60 : 911,365.05 = 439,615.10 : x
  2. Step 2: Convert to fraction form
    606,920.60/911,365.05 = 439,615.10/x
  3. Step 3: Cross multiply
    606,920.60x = 911,365.05 × 439,615.10
  4. Step 4: Simplify right side
    606,920.60x = 400,649,837,592.26
  5. Step 5: Solve for x
    x = 400,649,837,592.26/606,920.60
  6. Step 6: Final answer
    x = 660,135.51

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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.