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Finding the Fourth Proportional to 737,770.08, 1,015,978.74 and 640,929.72

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Solution

The fourth proportional to 737,770.08, 1,015,978.74 and 640,929.72 is: 882,620.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,770.08 : 1,015,978.74 = 640,929.72 : x
  2. Step 2: Convert to fraction form
    737,770.08/1,015,978.74 = 640,929.72/x
  3. Step 3: Cross multiply
    737,770.08x = 1,015,978.74 × 640,929.72
  4. Step 4: Simplify right side
    737,770.08x = 651,170,969,354.15
  5. Step 5: Solve for x
    x = 651,170,969,354.15/737,770.08
  6. Step 6: Final answer
    x = 882,620.46

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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.