Home / 1,219,421.60-1,829,132.40-378,231.20

Finding the Fourth Proportional to 1,219,421.60, 1,829,132.40 and 378,231.20

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Solution

The fourth proportional to 1,219,421.60, 1,829,132.40 and 378,231.20 is: 567,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,421.60 : 1,829,132.40 = 378,231.20 : x
  2. Step 2: Convert to fraction form
    1,219,421.60/1,829,132.40 = 378,231.20/x
  3. Step 3: Cross multiply
    1,219,421.60x = 1,829,132.40 × 378,231.20
  4. Step 4: Simplify right side
    1,219,421.60x = 691,834,942,610.88
  5. Step 5: Solve for x
    x = 691,834,942,610.88/1,219,421.60
  6. Step 6: Final answer
    x = 567,346.80

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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.