Home / 691,140.80-1,036,641.12-185,636.11

Finding the Fourth Proportional to 691,140.80, 1,036,641.12 and 185,636.11

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Solution

The fourth proportional to 691,140.80, 1,036,641.12 and 185,636.11 is: 278,435.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,140.80 : 1,036,641.12 = 185,636.11 : x
  2. Step 2: Convert to fraction form
    691,140.80/1,036,641.12 = 185,636.11/x
  3. Step 3: Cross multiply
    691,140.80x = 1,036,641.12 × 185,636.11
  4. Step 4: Simplify right side
    691,140.80x = 192,438,024,982.84
  5. Step 5: Solve for x
    x = 192,438,024,982.84/691,140.80
  6. Step 6: Final answer
    x = 278,435.34

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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.