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Finding the Fourth Proportional to 768,906.60, 1,153,359.90 and 207,941.10

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Solution

The fourth proportional to 768,906.60, 1,153,359.90 and 207,941.10 is: 311,911.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,906.60 : 1,153,359.90 = 207,941.10 : x
  2. Step 2: Convert to fraction form
    768,906.60/1,153,359.90 = 207,941.10/x
  3. Step 3: Cross multiply
    768,906.60x = 1,153,359.90 × 207,941.10
  4. Step 4: Simplify right side
    768,906.60x = 239,830,926,301.89
  5. Step 5: Solve for x
    x = 239,830,926,301.89/768,906.60
  6. Step 6: Final answer
    x = 311,911.65

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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.