Home / 1,118,078.40-1,677,117.60-408,129.60

Finding the Fourth Proportional to 1,118,078.40, 1,677,117.60 and 408,129.60

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Solution

The fourth proportional to 1,118,078.40, 1,677,117.60 and 408,129.60 is: 612,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,078.40 : 1,677,117.60 = 408,129.60 : x
  2. Step 2: Convert to fraction form
    1,118,078.40/1,677,117.60 = 408,129.60/x
  3. Step 3: Cross multiply
    1,118,078.40x = 1,677,117.60 × 408,129.60
  4. Step 4: Simplify right side
    1,118,078.40x = 684,481,335,240.96
  5. Step 5: Solve for x
    x = 684,481,335,240.96/1,118,078.40
  6. Step 6: Final answer
    x = 612,194.40

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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.