Home / 1,261,420.74-1,892,131.11-314,791.47

Finding the Fourth Proportional to 1,261,420.74, 1,892,131.11 and 314,791.47

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Solution

The fourth proportional to 1,261,420.74, 1,892,131.11 and 314,791.47 is: 472,187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,420.74 : 1,892,131.11 = 314,791.47 : x
  2. Step 2: Convert to fraction form
    1,261,420.74/1,892,131.11 = 314,791.47/x
  3. Step 3: Cross multiply
    1,261,420.74x = 1,892,131.11 × 314,791.47
  4. Step 4: Simplify right side
    1,261,420.74x = 595,626,733,549.63
  5. Step 5: Solve for x
    x = 595,626,733,549.63/1,261,420.74
  6. Step 6: Final answer
    x = 472,187.21

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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.