Home / 1,221,830.40-1,831,190.40-1,088,083.20

Finding the Fourth Proportional to 1,221,830.40, 1,831,190.40 and 1,088,083.20

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Solution

The fourth proportional to 1,221,830.40, 1,831,190.40 and 1,088,083.20 is: 1,630,739.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,830.40 : 1,831,190.40 = 1,088,083.20 : x
  2. Step 2: Convert to fraction form
    1,221,830.40/1,831,190.40 = 1,088,083.20/x
  3. Step 3: Cross multiply
    1,221,830.40x = 1,831,190.40 × 1,088,083.20
  4. Step 4: Simplify right side
    1,221,830.40x = 1,992,487,510,241.28
  5. Step 5: Solve for x
    x = 1,992,487,510,241.28/1,221,830.40
  6. Step 6: Final answer
    x = 1,630,739.84

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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.