Home / 1,260,321.60-1,890,712.80-512,443.20

Finding the Fourth Proportional to 1,260,321.60, 1,890,712.80 and 512,443.20

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Solution

The fourth proportional to 1,260,321.60, 1,890,712.80 and 512,443.20 is: 768,758.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,321.60 : 1,890,712.80 = 512,443.20 : x
  2. Step 2: Convert to fraction form
    1,260,321.60/1,890,712.80 = 512,443.20/x
  3. Step 3: Cross multiply
    1,260,321.60x = 1,890,712.80 × 512,443.20
  4. Step 4: Simplify right side
    1,260,321.60x = 968,882,917,512.96
  5. Step 5: Solve for x
    x = 968,882,917,512.96/1,260,321.60
  6. Step 6: Final answer
    x = 768,758.48

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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.