Home / 1,214,646.80-1,821,970.20-415,857.20

Finding the Fourth Proportional to 1,214,646.80, 1,821,970.20 and 415,857.20

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Solution

The fourth proportional to 1,214,646.80, 1,821,970.20 and 415,857.20 is: 623,785.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,646.80 : 1,821,970.20 = 415,857.20 : x
  2. Step 2: Convert to fraction form
    1,214,646.80/1,821,970.20 = 415,857.20/x
  3. Step 3: Cross multiply
    1,214,646.80x = 1,821,970.20 × 415,857.20
  4. Step 4: Simplify right side
    1,214,646.80x = 757,679,425,855.44
  5. Step 5: Solve for x
    x = 757,679,425,855.44/1,214,646.80
  6. Step 6: Final answer
    x = 623,785.80

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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.