Home / 686,830.78-1,030,235.23-188,194.78

Finding the Fourth Proportional to 686,830.78, 1,030,235.23 and 188,194.78

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Solution

The fourth proportional to 686,830.78, 1,030,235.23 and 188,194.78 is: 282,289.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,830.78 : 1,030,235.23 = 188,194.78 : x
  2. Step 2: Convert to fraction form
    686,830.78/1,030,235.23 = 188,194.78/x
  3. Step 3: Cross multiply
    686,830.78x = 1,030,235.23 × 188,194.78
  4. Step 4: Simplify right side
    686,830.78x = 193,884,892,458.10
  5. Step 5: Solve for x
    x = 193,884,892,458.10/686,830.78
  6. Step 6: Final answer
    x = 282,289.17

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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.