Home / 1,121,855.40-1,682,264.70-490,444.20

Finding the Fourth Proportional to 1,121,855.40, 1,682,264.70 and 490,444.20

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Solution

The fourth proportional to 1,121,855.40, 1,682,264.70 and 490,444.20 is: 735,439.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,855.40 : 1,682,264.70 = 490,444.20 : x
  2. Step 2: Convert to fraction form
    1,121,855.40/1,682,264.70 = 490,444.20/x
  3. Step 3: Cross multiply
    1,121,855.40x = 1,682,264.70 × 490,444.20
  4. Step 4: Simplify right side
    1,121,855.40x = 825,056,964,979.74
  5. Step 5: Solve for x
    x = 825,056,964,979.74/1,121,855.40
  6. Step 6: Final answer
    x = 735,439.67

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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.