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Finding the Fourth Proportional to 677,162.88, 1,015,958.88 and 407,586.24

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Solution

The fourth proportional to 677,162.88, 1,015,958.88 and 407,586.24 is: 611,508.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,162.88 : 1,015,958.88 = 407,586.24 : x
  2. Step 2: Convert to fraction form
    677,162.88/1,015,958.88 = 407,586.24/x
  3. Step 3: Cross multiply
    677,162.88x = 1,015,958.88 × 407,586.24
  4. Step 4: Simplify right side
    677,162.88x = 414,090,859,893.81
  5. Step 5: Solve for x
    x = 414,090,859,893.81/677,162.88
  6. Step 6: Final answer
    x = 611,508.50

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Double scale
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1.5x scale

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.