Home / 384,936.12-531,148.86-353,968.20

Finding the Fourth Proportional to 384,936.12, 531,148.86 and 353,968.20

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Solution

The fourth proportional to 384,936.12, 531,148.86 and 353,968.20 is: 488,418.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,936.12 : 531,148.86 = 353,968.20 : x
  2. Step 2: Convert to fraction form
    384,936.12/531,148.86 = 353,968.20/x
  3. Step 3: Cross multiply
    384,936.12x = 531,148.86 × 353,968.20
  4. Step 4: Simplify right side
    384,936.12x = 188,009,805,906.25
  5. Step 5: Solve for x
    x = 188,009,805,906.25/384,936.12
  6. Step 6: Final answer
    x = 488,418.20

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1.5x scale

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.