Home / 1,188,211.60-1,782,317.40-430,416.10

Finding the Fourth Proportional to 1,188,211.60, 1,782,317.40 and 430,416.10

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Solution

The fourth proportional to 1,188,211.60, 1,782,317.40 and 430,416.10 is: 645,624.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,211.60 : 1,782,317.40 = 430,416.10 : x
  2. Step 2: Convert to fraction form
    1,188,211.60/1,782,317.40 = 430,416.10/x
  3. Step 3: Cross multiply
    1,188,211.60x = 1,782,317.40 × 430,416.10
  4. Step 4: Simplify right side
    1,188,211.60x = 767,138,104,270.14
  5. Step 5: Solve for x
    x = 767,138,104,270.14/1,188,211.60
  6. Step 6: Final answer
    x = 645,624.15

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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.