Home / 313,632,025.80-470,448,038.70-280,753,542.60

Finding the Fourth Proportional to 313,632,025.80, 470,448,038.70 and 280,753,542.60

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Solution

The fourth proportional to 313,632,025.80, 470,448,038.70 and 280,753,542.60 is: 421,130,313.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,632,025.80 : 470,448,038.70 = 280,753,542.60 : x
  2. Step 2: Convert to fraction form
    313,632,025.80/470,448,038.70 = 280,753,542.60/x
  3. Step 3: Cross multiply
    313,632,025.80x = 470,448,038.70 × 280,753,542.60
  4. Step 4: Simplify right side
    313,632,025.80x = 132,079,953,474,246,912
  5. Step 5: Solve for x
    x = 132,079,953,474,246,912/313,632,025.80
  6. Step 6: Final answer
    x = 421,130,313.90

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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.