Home / 1,378,679.20-2,068,083.60-432,080.80

Finding the Fourth Proportional to 1,378,679.20, 2,068,083.60 and 432,080.80

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Solution

The fourth proportional to 1,378,679.20, 2,068,083.60 and 432,080.80 is: 648,141.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,679.20 : 2,068,083.60 = 432,080.80 : x
  2. Step 2: Convert to fraction form
    1,378,679.20/2,068,083.60 = 432,080.80/x
  3. Step 3: Cross multiply
    1,378,679.20x = 2,068,083.60 × 432,080.80
  4. Step 4: Simplify right side
    1,378,679.20x = 893,579,216,354.88
  5. Step 5: Solve for x
    x = 893,579,216,354.88/1,378,679.20
  6. Step 6: Final answer
    x = 648,141.51

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1.5x scale

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.