Home / 1,298,388.40-1,946,027.40-666,977.20

Finding the Fourth Proportional to 1,298,388.40, 1,946,027.40 and 666,977.20

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Solution

The fourth proportional to 1,298,388.40, 1,946,027.40 and 666,977.20 is: 999,666.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,388.40 : 1,946,027.40 = 666,977.20 : x
  2. Step 2: Convert to fraction form
    1,298,388.40/1,946,027.40 = 666,977.20/x
  3. Step 3: Cross multiply
    1,298,388.40x = 1,946,027.40 × 666,977.20
  4. Step 4: Simplify right side
    1,298,388.40x = 1,297,955,906,375.28
  5. Step 5: Solve for x
    x = 1,297,955,906,375.28/1,298,388.40
  6. Step 6: Final answer
    x = 999,666.90

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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.