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Finding the Fourth Proportional to 660,664.86, 911,793.13 and 370,354.83

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Solution

The fourth proportional to 660,664.86, 911,793.13 and 370,354.83 is: 511,132.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,664.86 : 911,793.13 = 370,354.83 : x
  2. Step 2: Convert to fraction form
    660,664.86/911,793.13 = 370,354.83/x
  3. Step 3: Cross multiply
    660,664.86x = 911,793.13 × 370,354.83
  4. Step 4: Simplify right side
    660,664.86x = 337,686,990,813.68
  5. Step 5: Solve for x
    x = 337,686,990,813.68/660,664.86
  6. Step 6: Final answer
    x = 511,132.06

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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.