Home / 1,200,087.40-1,800,131.10-313,623.40

Finding the Fourth Proportional to 1,200,087.40, 1,800,131.10 and 313,623.40

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Solution

The fourth proportional to 1,200,087.40, 1,800,131.10 and 313,623.40 is: 470,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,087.40 : 1,800,131.10 = 313,623.40 : x
  2. Step 2: Convert to fraction form
    1,200,087.40/1,800,131.10 = 313,623.40/x
  3. Step 3: Cross multiply
    1,200,087.40x = 1,800,131.10 × 313,623.40
  4. Step 4: Simplify right side
    1,200,087.40x = 564,563,236,027.74
  5. Step 5: Solve for x
    x = 564,563,236,027.74/1,200,087.40
  6. Step 6: Final answer
    x = 470,435.10

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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.