Home / 1,219,538.40-1,829,307.60-378,175.20

Finding the Fourth Proportional to 1,219,538.40, 1,829,307.60 and 378,175.20

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Solution

The fourth proportional to 1,219,538.40, 1,829,307.60 and 378,175.20 is: 567,262.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,538.40 : 1,829,307.60 = 378,175.20 : x
  2. Step 2: Convert to fraction form
    1,219,538.40/1,829,307.60 = 378,175.20/x
  3. Step 3: Cross multiply
    1,219,538.40x = 1,829,307.60 × 378,175.20
  4. Step 4: Simplify right side
    1,219,538.40x = 691,798,767,491.52
  5. Step 5: Solve for x
    x = 691,798,767,491.52/1,219,538.40
  6. Step 6: Final answer
    x = 567,262.80

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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.