Home / 1,409,717.61-1,945,412.45-765,138.05

Finding the Fourth Proportional to 1,409,717.61, 1,945,412.45 and 765,138.05

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Solution

The fourth proportional to 1,409,717.61, 1,945,412.45 and 765,138.05 is: 1,055,891.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,717.61 : 1,945,412.45 = 765,138.05 : x
  2. Step 2: Convert to fraction form
    1,409,717.61/1,945,412.45 = 765,138.05/x
  3. Step 3: Cross multiply
    1,409,717.61x = 1,945,412.45 × 765,138.05
  4. Step 4: Simplify right side
    1,409,717.61x = 1,488,509,074,885.97
  5. Step 5: Solve for x
    x = 1,488,509,074,885.97/1,409,717.61
  6. Step 6: Final answer
    x = 1,055,891.67

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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.