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Finding the Fourth Proportional to 660,546.98, 911,611.05 and 374,118.02

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Solution

The fourth proportional to 660,546.98, 911,611.05 and 374,118.02 is: 516,314.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,546.98 : 911,611.05 = 374,118.02 : x
  2. Step 2: Convert to fraction form
    660,546.98/911,611.05 = 374,118.02/x
  3. Step 3: Cross multiply
    660,546.98x = 911,611.05 × 374,118.02
  4. Step 4: Simplify right side
    660,546.98x = 341,050,121,036.12
  5. Step 5: Solve for x
    x = 341,050,121,036.12/660,546.98
  6. Step 6: Final answer
    x = 516,314.71

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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.