Home / 1,388,305.60-2,082,458.40-391,033.60

Finding the Fourth Proportional to 1,388,305.60, 2,082,458.40 and 391,033.60

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Solution

The fourth proportional to 1,388,305.60, 2,082,458.40 and 391,033.60 is: 586,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,305.60 : 2,082,458.40 = 391,033.60 : x
  2. Step 2: Convert to fraction form
    1,388,305.60/2,082,458.40 = 391,033.60/x
  3. Step 3: Cross multiply
    1,388,305.60x = 2,082,458.40 × 391,033.60
  4. Step 4: Simplify right side
    1,388,305.60x = 814,311,205,002.24
  5. Step 5: Solve for x
    x = 814,311,205,002.24/1,388,305.60
  6. Step 6: Final answer
    x = 586,550.40

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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.