Home / 1,118,087.40-1,677,131.10-408,138.60

Finding the Fourth Proportional to 1,118,087.40, 1,677,131.10 and 408,138.60

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Solution

The fourth proportional to 1,118,087.40, 1,677,131.10 and 408,138.60 is: 612,207.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,087.40 : 1,677,131.10 = 408,138.60 : x
  2. Step 2: Convert to fraction form
    1,118,087.40/1,677,131.10 = 408,138.60/x
  3. Step 3: Cross multiply
    1,118,087.40x = 1,677,131.10 × 408,138.60
  4. Step 4: Simplify right side
    1,118,087.40x = 684,501,939,170.46
  5. Step 5: Solve for x
    x = 684,501,939,170.46/1,118,087.40
  6. Step 6: Final answer
    x = 612,207.90

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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.