Home / 1,246,806.20-1,870,209.30-405,385.40

Finding the Fourth Proportional to 1,246,806.20, 1,870,209.30 and 405,385.40

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Solution

The fourth proportional to 1,246,806.20, 1,870,209.30 and 405,385.40 is: 608,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246,806.20 : 1,870,209.30 = 405,385.40 : x
  2. Step 2: Convert to fraction form
    1,246,806.20/1,870,209.30 = 405,385.40/x
  3. Step 3: Cross multiply
    1,246,806.20x = 1,870,209.30 × 405,385.40
  4. Step 4: Simplify right side
    1,246,806.20x = 758,155,545,164.22
  5. Step 5: Solve for x
    x = 758,155,545,164.22/1,246,806.20
  6. Step 6: Final answer
    x = 608,078.10

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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.