Home / 666,742.20-1,000,113.30-368,143.80

Finding the Fourth Proportional to 666,742.20, 1,000,113.30 and 368,143.80

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Solution

The fourth proportional to 666,742.20, 1,000,113.30 and 368,143.80 is: 552,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,742.20 : 1,000,113.30 = 368,143.80 : x
  2. Step 2: Convert to fraction form
    666,742.20/1,000,113.30 = 368,143.80/x
  3. Step 3: Cross multiply
    666,742.20x = 1,000,113.30 × 368,143.80
  4. Step 4: Simplify right side
    666,742.20x = 368,185,510,692.54
  5. Step 5: Solve for x
    x = 368,185,510,692.54/666,742.20
  6. Step 6: Final answer
    x = 552,215.70

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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.