Home / 451,984,206.78-677,982,608.73-128,868,078.78

Finding the Fourth Proportional to 451,984,206.78, 677,982,608.73 and 128,868,078.78

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Solution

The fourth proportional to 451,984,206.78, 677,982,608.73 and 128,868,078.78 is: 193,303,913.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,984,206.78 : 677,982,608.73 = 128,868,078.78 : x
  2. Step 2: Convert to fraction form
    451,984,206.78/677,982,608.73 = 128,868,078.78/x
  3. Step 3: Cross multiply
    451,984,206.78x = 677,982,608.73 × 128,868,078.78
  4. Step 4: Simplify right side
    451,984,206.78x = 87,370,316,233,287,552
  5. Step 5: Solve for x
    x = 87,370,316,233,287,552/451,984,206.78
  6. Step 6: Final answer
    x = 193,303,913.99

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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.