Home / 777,887.64-1,073,484.96-420,191.64

Finding the Fourth Proportional to 777,887.64, 1,073,484.96 and 420,191.64

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Solution

The fourth proportional to 777,887.64, 1,073,484.96 and 420,191.64 is: 579,864.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,887.64 : 1,073,484.96 = 420,191.64 : x
  2. Step 2: Convert to fraction form
    777,887.64/1,073,484.96 = 420,191.64/x
  3. Step 3: Cross multiply
    777,887.64x = 1,073,484.96 × 420,191.64
  4. Step 4: Simplify right side
    777,887.64x = 451,069,405,857.73
  5. Step 5: Solve for x
    x = 451,069,405,857.73/777,887.64
  6. Step 6: Final answer
    x = 579,864.47

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1.5x scale

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.