Home / 769,064.80-1,153,597.20-208,099.30

Finding the Fourth Proportional to 769,064.80, 1,153,597.20 and 208,099.30

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Solution

The fourth proportional to 769,064.80, 1,153,597.20 and 208,099.30 is: 312,148.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,064.80 : 1,153,597.20 = 208,099.30 : x
  2. Step 2: Convert to fraction form
    769,064.80/1,153,597.20 = 208,099.30/x
  3. Step 3: Cross multiply
    769,064.80x = 1,153,597.20 × 208,099.30
  4. Step 4: Simplify right side
    769,064.80x = 240,062,769,801.96
  5. Step 5: Solve for x
    x = 240,062,769,801.96/769,064.80
  6. Step 6: Final answer
    x = 312,148.95

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Double scale
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Similar ratio
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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.