Home / 485,469,727.20-728,456,533.20-212,868,050.40

Finding the Fourth Proportional to 485,469,727.20, 728,456,533.20 and 212,868,050.40

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Solution

The fourth proportional to 485,469,727.20, 728,456,533.20 and 212,868,050.40 is: 319,412,546.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,469,727.20 : 728,456,533.20 = 212,868,050.40 : x
  2. Step 2: Convert to fraction form
    485,469,727.20/728,456,533.20 = 212,868,050.40/x
  3. Step 3: Cross multiply
    485,469,727.20x = 728,456,533.20 × 212,868,050.40
  4. Step 4: Simplify right side
    485,469,727.20x = 155,065,122,023,426,880
  5. Step 5: Solve for x
    x = 155,065,122,023,426,880/485,469,727.20
  6. Step 6: Final answer
    x = 319,412,546.93

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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.