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Finding the Fourth Proportional to 648,447.78, 972,802.89 and 227,756.46

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Solution

The fourth proportional to 648,447.78, 972,802.89 and 227,756.46 is: 341,680.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,447.78 : 972,802.89 = 227,756.46 : x
  2. Step 2: Convert to fraction form
    648,447.78/972,802.89 = 227,756.46/x
  3. Step 3: Cross multiply
    648,447.78x = 972,802.89 × 227,756.46
  4. Step 4: Simplify right side
    648,447.78x = 221,562,142,504.17
  5. Step 5: Solve for x
    x = 221,562,142,504.17/648,447.78
  6. Step 6: Final answer
    x = 341,680.78

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1.5x scale

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.