Home / 862,781.50-1,190,628.77-470,305.85

Finding the Fourth Proportional to 862,781.50, 1,190,628.77 and 470,305.85

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Solution

The fourth proportional to 862,781.50, 1,190,628.77 and 470,305.85 is: 649,016.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,781.50 : 1,190,628.77 = 470,305.85 : x
  2. Step 2: Convert to fraction form
    862,781.50/1,190,628.77 = 470,305.85/x
  3. Step 3: Cross multiply
    862,781.50x = 1,190,628.77 × 470,305.85
  4. Step 4: Simplify right side
    862,781.50x = 559,959,679,861.64
  5. Step 5: Solve for x
    x = 559,959,679,861.64/862,781.50
  6. Step 6: Final answer
    x = 649,016.79

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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.