Home / 470,255.46-649,055.79-309,125.34

Finding the Fourth Proportional to 470,255.46, 649,055.79 and 309,125.34

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Solution

The fourth proportional to 470,255.46, 649,055.79 and 309,125.34 is: 426,660.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,255.46 : 649,055.79 = 309,125.34 : x
  2. Step 2: Convert to fraction form
    470,255.46/649,055.79 = 309,125.34/x
  3. Step 3: Cross multiply
    470,255.46x = 649,055.79 × 309,125.34
  4. Step 4: Simplify right side
    470,255.46x = 200,639,591,762.72
  5. Step 5: Solve for x
    x = 200,639,591,762.72/470,255.46
  6. Step 6: Final answer
    x = 426,660.84

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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.