Home / 1,383,944.71-1,909,910.06-780,319.75

Finding the Fourth Proportional to 1,383,944.71, 1,909,910.06 and 780,319.75

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Solution

The fourth proportional to 1,383,944.71, 1,909,910.06 and 780,319.75 is: 1,076,878.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,944.71 : 1,909,910.06 = 780,319.75 : x
  2. Step 2: Convert to fraction form
    1,383,944.71/1,909,910.06 = 780,319.75/x
  3. Step 3: Cross multiply
    1,383,944.71x = 1,909,910.06 × 780,319.75
  4. Step 4: Simplify right side
    1,383,944.71x = 1,490,340,540,541.69
  5. Step 5: Solve for x
    x = 1,490,340,540,541.69/1,383,944.71
  6. Step 6: Final answer
    x = 1,076,878.67

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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.