Home / 1,276,664.40-1,911,310.20-779,000.40

Finding the Fourth Proportional to 1,276,664.40, 1,911,310.20 and 779,000.40

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Solution

The fourth proportional to 1,276,664.40, 1,911,310.20 and 779,000.40 is: 1,166,251.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,664.40 : 1,911,310.20 = 779,000.40 : x
  2. Step 2: Convert to fraction form
    1,276,664.40/1,911,310.20 = 779,000.40/x
  3. Step 3: Cross multiply
    1,276,664.40x = 1,911,310.20 × 779,000.40
  4. Step 4: Simplify right side
    1,276,664.40x = 1,488,911,410,324.08
  5. Step 5: Solve for x
    x = 1,488,911,410,324.08/1,276,664.40
  6. Step 6: Final answer
    x = 1,166,251.22

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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.