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Finding the Fourth Proportional to 660,479.29, 911,464.92 and 370,091.48

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Solution

The fourth proportional to 660,479.29, 911,464.92 and 370,091.48 is: 510,728.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,479.29 : 911,464.92 = 370,091.48 : x
  2. Step 2: Convert to fraction form
    660,479.29/911,464.92 = 370,091.48/x
  3. Step 3: Cross multiply
    660,479.29x = 911,464.92 × 370,091.48
  4. Step 4: Simplify right side
    660,479.29x = 337,325,396,653.56
  5. Step 5: Solve for x
    x = 337,325,396,653.56/660,479.29
  6. Step 6: Final answer
    x = 510,728.19

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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.