Home / 669,920.10-1,004,880.15-220,710.30

Finding the Fourth Proportional to 669,920.10, 1,004,880.15 and 220,710.30

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Solution

The fourth proportional to 669,920.10, 1,004,880.15 and 220,710.30 is: 331,065.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,920.10 : 1,004,880.15 = 220,710.30 : x
  2. Step 2: Convert to fraction form
    669,920.10/1,004,880.15 = 220,710.30/x
  3. Step 3: Cross multiply
    669,920.10x = 1,004,880.15 × 220,710.30
  4. Step 4: Simplify right side
    669,920.10x = 221,787,399,370.55
  5. Step 5: Solve for x
    x = 221,787,399,370.55/669,920.10
  6. Step 6: Final answer
    x = 331,065.45

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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.