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Finding the Fourth Proportional to 993,961.20, 1,490,941.80 and 836,497.20

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Solution

The fourth proportional to 993,961.20, 1,490,941.80 and 836,497.20 is: 1,254,745.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,961.20 : 1,490,941.80 = 836,497.20 : x
  2. Step 2: Convert to fraction form
    993,961.20/1,490,941.80 = 836,497.20/x
  3. Step 3: Cross multiply
    993,961.20x = 1,490,941.80 × 836,497.20
  4. Step 4: Simplify right side
    993,961.20x = 1,247,168,641,062.96
  5. Step 5: Solve for x
    x = 1,247,168,641,062.96/993,961.20
  6. Step 6: Final answer
    x = 1,254,745.80

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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.