Home / 769,749.40-1,151,513.70-665,723.80

Finding the Fourth Proportional to 769,749.40, 1,151,513.70 and 665,723.80

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Solution

The fourth proportional to 769,749.40, 1,151,513.70 and 665,723.80 is: 995,895.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,749.40 : 1,151,513.70 = 665,723.80 : x
  2. Step 2: Convert to fraction form
    769,749.40/1,151,513.70 = 665,723.80/x
  3. Step 3: Cross multiply
    769,749.40x = 1,151,513.70 × 665,723.80
  4. Step 4: Simplify right side
    769,749.40x = 766,590,076,116.06
  5. Step 5: Solve for x
    x = 766,590,076,116.06/769,749.40
  6. Step 6: Final answer
    x = 995,895.65

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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.