Home / 1,276,891.20-1,915,336.80-1,258,228.80

Finding the Fourth Proportional to 1,276,891.20, 1,915,336.80 and 1,258,228.80

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Solution

The fourth proportional to 1,276,891.20, 1,915,336.80 and 1,258,228.80 is: 1,887,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,891.20 : 1,915,336.80 = 1,258,228.80 : x
  2. Step 2: Convert to fraction form
    1,276,891.20/1,915,336.80 = 1,258,228.80/x
  3. Step 3: Cross multiply
    1,276,891.20x = 1,915,336.80 × 1,258,228.80
  4. Step 4: Simplify right side
    1,276,891.20x = 2,409,931,923,459.84
  5. Step 5: Solve for x
    x = 2,409,931,923,459.84/1,276,891.20
  6. Step 6: Final answer
    x = 1,887,343.20

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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.