Home / 930,904.60-1,396,356.90-458,512.60

Finding the Fourth Proportional to 930,904.60, 1,396,356.90 and 458,512.60

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Solution

The fourth proportional to 930,904.60, 1,396,356.90 and 458,512.60 is: 687,768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,904.60 : 1,396,356.90 = 458,512.60 : x
  2. Step 2: Convert to fraction form
    930,904.60/1,396,356.90 = 458,512.60/x
  3. Step 3: Cross multiply
    930,904.60x = 1,396,356.90 × 458,512.60
  4. Step 4: Simplify right side
    930,904.60x = 640,247,232,746.94
  5. Step 5: Solve for x
    x = 640,247,232,746.94/930,904.60
  6. Step 6: Final answer
    x = 687,768.90

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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.