Home / 1,383,867.16-1,909,736.94-780,255.16

Finding the Fourth Proportional to 1,383,867.16, 1,909,736.94 and 780,255.16

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Solution

The fourth proportional to 1,383,867.16, 1,909,736.94 and 780,255.16 is: 1,076,752.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,867.16 : 1,909,736.94 = 780,255.16 : x
  2. Step 2: Convert to fraction form
    1,383,867.16/1,909,736.94 = 780,255.16/x
  3. Step 3: Cross multiply
    1,383,867.16x = 1,909,736.94 × 780,255.16
  4. Step 4: Simplify right side
    1,383,867.16x = 1,490,082,101,677.61
  5. Step 5: Solve for x
    x = 1,490,082,101,677.61/1,383,867.16
  6. Step 6: Final answer
    x = 1,076,752.27

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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.