Home / 670,643.10-1,005,964.65-221,433.30

Finding the Fourth Proportional to 670,643.10, 1,005,964.65 and 221,433.30

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Solution

The fourth proportional to 670,643.10, 1,005,964.65 and 221,433.30 is: 332,149.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,643.10 : 1,005,964.65 = 221,433.30 : x
  2. Step 2: Convert to fraction form
    670,643.10/1,005,964.65 = 221,433.30/x
  3. Step 3: Cross multiply
    670,643.10x = 1,005,964.65 × 221,433.30
  4. Step 4: Simplify right side
    670,643.10x = 222,754,072,132.85
  5. Step 5: Solve for x
    x = 222,754,072,132.85/670,643.10
  6. Step 6: Final answer
    x = 332,149.95

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Double scale
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Similar ratio
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1.5x scale

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.