Home / 1,642,640.76-2,266,820.16-917,499.06

Finding the Fourth Proportional to 1,642,640.76, 2,266,820.16 and 917,499.06

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Solution

The fourth proportional to 1,642,640.76, 2,266,820.16 and 917,499.06 is: 1,266,135.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642,640.76 : 2,266,820.16 = 917,499.06 : x
  2. Step 2: Convert to fraction form
    1,642,640.76/2,266,820.16 = 917,499.06/x
  3. Step 3: Cross multiply
    1,642,640.76x = 2,266,820.16 × 917,499.06
  4. Step 4: Simplify right side
    1,642,640.76x = 2,079,805,365,989.05
  5. Step 5: Solve for x
    x = 2,079,805,365,989.05/1,642,640.76
  6. Step 6: Final answer
    x = 1,266,135.25

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.