Home / 1,221,311.80-1,831,967.70-906,383.80

Finding the Fourth Proportional to 1,221,311.80, 1,831,967.70 and 906,383.80

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Solution

The fourth proportional to 1,221,311.80, 1,831,967.70 and 906,383.80 is: 1,359,575.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,311.80 : 1,831,967.70 = 906,383.80 : x
  2. Step 2: Convert to fraction form
    1,221,311.80/1,831,967.70 = 906,383.80/x
  3. Step 3: Cross multiply
    1,221,311.80x = 1,831,967.70 × 906,383.80
  4. Step 4: Simplify right side
    1,221,311.80x = 1,660,465,845,403.26
  5. Step 5: Solve for x
    x = 1,660,465,845,403.26/1,221,311.80
  6. Step 6: Final answer
    x = 1,359,575.70

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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.