Home / 849,311.88-1,273,967.80-309,608.62

Finding the Fourth Proportional to 849,311.88, 1,273,967.80 and 309,608.62

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Solution

The fourth proportional to 849,311.88, 1,273,967.80 and 309,608.62 is: 464,412.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,311.88 : 1,273,967.80 = 309,608.62 : x
  2. Step 2: Convert to fraction form
    849,311.88/1,273,967.80 = 309,608.62/x
  3. Step 3: Cross multiply
    849,311.88x = 1,273,967.80 × 309,608.62
  4. Step 4: Simplify right side
    849,311.88x = 394,431,411,708.42
  5. Step 5: Solve for x
    x = 394,431,411,708.42/849,311.88
  6. Step 6: Final answer
    x = 464,412.92

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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.