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Finding the Fourth Proportional to 660,379.64, 911,367.45 and 370,014.48

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Solution

The fourth proportional to 660,379.64, 911,367.45 and 370,014.48 is: 510,644.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,379.64 : 911,367.45 = 370,014.48 : x
  2. Step 2: Convert to fraction form
    660,379.64/911,367.45 = 370,014.48/x
  3. Step 3: Cross multiply
    660,379.64x = 911,367.45 × 370,014.48
  4. Step 4: Simplify right side
    660,379.64x = 337,219,153,100.68
  5. Step 5: Solve for x
    x = 337,219,153,100.68/660,379.64
  6. Step 6: Final answer
    x = 510,644.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.