Home / 411,939.48-618,308.16-198,856.98

Finding the Fourth Proportional to 411,939.48, 618,308.16 and 198,856.98

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Solution

The fourth proportional to 411,939.48, 618,308.16 and 198,856.98 is: 298,478.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,939.48 : 618,308.16 = 198,856.98 : x
  2. Step 2: Convert to fraction form
    411,939.48/618,308.16 = 198,856.98/x
  3. Step 3: Cross multiply
    411,939.48x = 618,308.16 × 198,856.98
  4. Step 4: Simplify right side
    411,939.48x = 122,954,893,406.96
  5. Step 5: Solve for x
    x = 122,954,893,406.96/411,939.48
  6. Step 6: Final answer
    x = 298,478.05

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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.