Home / 1,219,485.40-1,829,228.10-378,122.20

Finding the Fourth Proportional to 1,219,485.40, 1,829,228.10 and 378,122.20

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Solution

The fourth proportional to 1,219,485.40, 1,829,228.10 and 378,122.20 is: 567,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,485.40 : 1,829,228.10 = 378,122.20 : x
  2. Step 2: Convert to fraction form
    1,219,485.40/1,829,228.10 = 378,122.20/x
  3. Step 3: Cross multiply
    1,219,485.40x = 1,829,228.10 × 378,122.20
  4. Step 4: Simplify right side
    1,219,485.40x = 691,671,753,473.82
  5. Step 5: Solve for x
    x = 691,671,753,473.82/1,219,485.40
  6. Step 6: Final answer
    x = 567,183.30

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Double scale
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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.