Home / 314,928,608.40-472,392,912.60-289,986,310.80

Finding the Fourth Proportional to 314,928,608.40, 472,392,912.60 and 289,986,310.80

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Solution

The fourth proportional to 314,928,608.40, 472,392,912.60 and 289,986,310.80 is: 434,979,466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,608.40 : 472,392,912.60 = 289,986,310.80 : x
  2. Step 2: Convert to fraction form
    314,928,608.40/472,392,912.60 = 289,986,310.80/x
  3. Step 3: Cross multiply
    314,928,608.40x = 472,392,912.60 × 289,986,310.80
  4. Step 4: Simplify right side
    314,928,608.40x = 136,987,477,972,940,848
  5. Step 5: Solve for x
    x = 136,987,477,972,940,848/314,928,608.40
  6. Step 6: Final answer
    x = 434,979,466.20

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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.