Home / 1,276,823.78-1,911,856.75-770,708.24

Finding the Fourth Proportional to 1,276,823.78, 1,911,856.75 and 770,708.24

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Solution

The fourth proportional to 1,276,823.78, 1,911,856.75 and 770,708.24 is: 1,154,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,823.78 : 1,911,856.75 = 770,708.24 : x
  2. Step 2: Convert to fraction form
    1,276,823.78/1,911,856.75 = 770,708.24/x
  3. Step 3: Cross multiply
    1,276,823.78x = 1,911,856.75 × 770,708.24
  4. Step 4: Simplify right side
    1,276,823.78x = 1,473,483,750,924.62
  5. Step 5: Solve for x
    x = 1,473,483,750,924.62/1,276,823.78
  6. Step 6: Final answer
    x = 1,154,022.80

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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.