Home / 389,985.78-584,904.69-190,105.14

Finding the Fourth Proportional to 389,985.78, 584,904.69 and 190,105.14

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Solution

The fourth proportional to 389,985.78, 584,904.69 and 190,105.14 is: 285,121.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,985.78 : 584,904.69 = 190,105.14 : x
  2. Step 2: Convert to fraction form
    389,985.78/584,904.69 = 190,105.14/x
  3. Step 3: Cross multiply
    389,985.78x = 584,904.69 × 190,105.14
  4. Step 4: Simplify right side
    389,985.78x = 111,193,387,979.11
  5. Step 5: Solve for x
    x = 111,193,387,979.11/389,985.78
  6. Step 6: Final answer
    x = 285,121.65

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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.