Home / 1,298,376.40-1,946,009.40-666,965.20

Finding the Fourth Proportional to 1,298,376.40, 1,946,009.40 and 666,965.20

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Solution

The fourth proportional to 1,298,376.40, 1,946,009.40 and 666,965.20 is: 999,648.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,376.40 : 1,946,009.40 = 666,965.20 : x
  2. Step 2: Convert to fraction form
    1,298,376.40/1,946,009.40 = 666,965.20/x
  3. Step 3: Cross multiply
    1,298,376.40x = 1,946,009.40 × 666,965.20
  4. Step 4: Simplify right side
    1,298,376.40x = 1,297,920,548,672.88
  5. Step 5: Solve for x
    x = 1,297,920,548,672.88/1,298,376.40
  6. Step 6: Final answer
    x = 999,648.91

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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.