Home / 911,056.40-1,366,584.60-412,420.40

Finding the Fourth Proportional to 911,056.40, 1,366,584.60 and 412,420.40

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Solution

The fourth proportional to 911,056.40, 1,366,584.60 and 412,420.40 is: 618,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,056.40 : 1,366,584.60 = 412,420.40 : x
  2. Step 2: Convert to fraction form
    911,056.40/1,366,584.60 = 412,420.40/x
  3. Step 3: Cross multiply
    911,056.40x = 1,366,584.60 × 412,420.40
  4. Step 4: Simplify right side
    911,056.40x = 563,607,367,365.84
  5. Step 5: Solve for x
    x = 563,607,367,365.84/911,056.40
  6. Step 6: Final answer
    x = 618,630.60

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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.