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Finding the Fourth Proportional to 660,502.92, 911,502 and 374,015.64

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Solution

The fourth proportional to 660,502.92, 911,502 and 374,015.64 is: 516,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,502.92 : 911,502 = 374,015.64 : x
  2. Step 2: Convert to fraction form
    660,502.92/911,502 = 374,015.64/x
  3. Step 3: Cross multiply
    660,502.92x = 911,502 × 374,015.64
  4. Step 4: Simplify right side
    660,502.92x = 340,916,003,891.28
  5. Step 5: Solve for x
    x = 340,916,003,891.28/660,502.92
  6. Step 6: Final answer
    x = 516,146.10

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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.