Home / 628,812.10-943,218.15-208,033.30

Finding the Fourth Proportional to 628,812.10, 943,218.15 and 208,033.30

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Solution

The fourth proportional to 628,812.10, 943,218.15 and 208,033.30 is: 312,049.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,812.10 : 943,218.15 = 208,033.30 : x
  2. Step 2: Convert to fraction form
    628,812.10/943,218.15 = 208,033.30/x
  3. Step 3: Cross multiply
    628,812.10x = 943,218.15 × 208,033.30
  4. Step 4: Simplify right side
    628,812.10x = 196,220,784,364.40
  5. Step 5: Solve for x
    x = 196,220,784,364.40/628,812.10
  6. Step 6: Final answer
    x = 312,049.95

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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.