Home / 1,086,906.40-1,630,359.60-666,419.20

Finding the Fourth Proportional to 1,086,906.40, 1,630,359.60 and 666,419.20

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Solution

The fourth proportional to 1,086,906.40, 1,630,359.60 and 666,419.20 is: 999,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,906.40 : 1,630,359.60 = 666,419.20 : x
  2. Step 2: Convert to fraction form
    1,086,906.40/1,630,359.60 = 666,419.20/x
  3. Step 3: Cross multiply
    1,086,906.40x = 1,630,359.60 × 666,419.20
  4. Step 4: Simplify right side
    1,086,906.40x = 1,086,502,940,344.32
  5. Step 5: Solve for x
    x = 1,086,502,940,344.32/1,086,906.40
  6. Step 6: Final answer
    x = 999,628.80

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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.