Home / 1,405,046.76-1,939,011.75-861,077.67

Finding the Fourth Proportional to 1,405,046.76, 1,939,011.75 and 861,077.67

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Solution

The fourth proportional to 1,405,046.76, 1,939,011.75 and 861,077.67 is: 1,188,316.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,046.76 : 1,939,011.75 = 861,077.67 : x
  2. Step 2: Convert to fraction form
    1,405,046.76/1,939,011.75 = 861,077.67/x
  3. Step 3: Cross multiply
    1,405,046.76x = 1,939,011.75 × 861,077.67
  4. Step 4: Simplify right side
    1,405,046.76x = 1,669,639,719,792.62
  5. Step 5: Solve for x
    x = 1,669,639,719,792.62/1,405,046.76
  6. Step 6: Final answer
    x = 1,188,316.12

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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.