Home / 1,121,853.40-1,682,261.70-490,442.20

Finding the Fourth Proportional to 1,121,853.40, 1,682,261.70 and 490,442.20

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Solution

The fourth proportional to 1,121,853.40, 1,682,261.70 and 490,442.20 is: 735,436.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,853.40 : 1,682,261.70 = 490,442.20 : x
  2. Step 2: Convert to fraction form
    1,121,853.40/1,682,261.70 = 490,442.20/x
  3. Step 3: Cross multiply
    1,121,853.40x = 1,682,261.70 × 490,442.20
  4. Step 4: Simplify right side
    1,121,853.40x = 825,052,129,123.74
  5. Step 5: Solve for x
    x = 825,052,129,123.74/1,121,853.40
  6. Step 6: Final answer
    x = 735,436.67

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Double scale
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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.