Home / 648,308.81-972,540.79-198,970.87

Finding the Fourth Proportional to 648,308.81, 972,540.79 and 198,970.87

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Solution

The fourth proportional to 648,308.81, 972,540.79 and 198,970.87 is: 298,480.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,308.81 : 972,540.79 = 198,970.87 : x
  2. Step 2: Convert to fraction form
    648,308.81/972,540.79 = 198,970.87/x
  3. Step 3: Cross multiply
    648,308.81x = 972,540.79 × 198,970.87
  4. Step 4: Simplify right side
    648,308.81x = 193,507,284,903.70
  5. Step 5: Solve for x
    x = 193,507,284,903.70/648,308.81
  6. Step 6: Final answer
    x = 298,480.11

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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.