Home / 850,853.60-1,276,280.40-821,985.20

Finding the Fourth Proportional to 850,853.60, 1,276,280.40 and 821,985.20

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Solution

The fourth proportional to 850,853.60, 1,276,280.40 and 821,985.20 is: 1,232,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,853.60 : 1,276,280.40 = 821,985.20 : x
  2. Step 2: Convert to fraction form
    850,853.60/1,276,280.40 = 821,985.20/x
  3. Step 3: Cross multiply
    850,853.60x = 1,276,280.40 × 821,985.20
  4. Step 4: Simplify right side
    850,853.60x = 1,049,083,599,850.08
  5. Step 5: Solve for x
    x = 1,049,083,599,850.08/850,853.60
  6. Step 6: Final answer
    x = 1,232,977.80

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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.