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Finding the Fourth Proportional to 773,907.80, 1,160,861.70 and 212,941.40

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Solution

The fourth proportional to 773,907.80, 1,160,861.70 and 212,941.40 is: 319,412.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    773,907.80 : 1,160,861.70 = 212,941.40 : x
  2. Step 2: Convert to fraction form
    773,907.80/1,160,861.70 = 212,941.40/x
  3. Step 3: Cross multiply
    773,907.80x = 1,160,861.70 × 212,941.40
  4. Step 4: Simplify right side
    773,907.80x = 247,195,515,604.38
  5. Step 5: Solve for x
    x = 247,195,515,604.38/773,907.80
  6. Step 6: Final answer
    x = 319,412.10

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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.