Home / 1,210,858.10-1,815,397.75-580,214.78

Finding the Fourth Proportional to 1,210,858.10, 1,815,397.75 and 580,214.78

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Solution

The fourth proportional to 1,210,858.10, 1,815,397.75 and 580,214.78 is: 869,895.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,858.10 : 1,815,397.75 = 580,214.78 : x
  2. Step 2: Convert to fraction form
    1,210,858.10/1,815,397.75 = 580,214.78/x
  3. Step 3: Cross multiply
    1,210,858.10x = 1,815,397.75 × 580,214.78
  4. Step 4: Simplify right side
    1,210,858.10x = 1,053,320,606,128.75
  5. Step 5: Solve for x
    x = 1,053,320,606,128.75/1,210,858.10
  6. Step 6: Final answer
    x = 869,895.99

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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.