Home / 818,342.40-1,128,921.36-635,805.20

Finding the Fourth Proportional to 818,342.40, 1,128,921.36 and 635,805.20

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Solution

The fourth proportional to 818,342.40, 1,128,921.36 and 635,805.20 is: 877,107.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,342.40 : 1,128,921.36 = 635,805.20 : x
  2. Step 2: Convert to fraction form
    818,342.40/1,128,921.36 = 635,805.20/x
  3. Step 3: Cross multiply
    818,342.40x = 1,128,921.36 × 635,805.20
  4. Step 4: Simplify right side
    818,342.40x = 717,774,071,079.07
  5. Step 5: Solve for x
    x = 717,774,071,079.07/818,342.40
  6. Step 6: Final answer
    x = 877,107.27

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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.