Home / 1,189,314.60-1,783,971.90-390,622.20

Finding the Fourth Proportional to 1,189,314.60, 1,783,971.90 and 390,622.20

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Solution

The fourth proportional to 1,189,314.60, 1,783,971.90 and 390,622.20 is: 585,933.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,314.60 : 1,783,971.90 = 390,622.20 : x
  2. Step 2: Convert to fraction form
    1,189,314.60/1,783,971.90 = 390,622.20/x
  3. Step 3: Cross multiply
    1,189,314.60x = 1,783,971.90 × 390,622.20
  4. Step 4: Simplify right side
    1,189,314.60x = 696,859,028,316.18
  5. Step 5: Solve for x
    x = 696,859,028,316.18/1,189,314.60
  6. Step 6: Final answer
    x = 585,933.30

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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.