Home / 1,315,218.72-1,814,485.38-763,840.56

Finding the Fourth Proportional to 1,315,218.72, 1,814,485.38 and 763,840.56

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Solution

The fourth proportional to 1,315,218.72, 1,814,485.38 and 763,840.56 is: 1,053,800.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,218.72 : 1,814,485.38 = 763,840.56 : x
  2. Step 2: Convert to fraction form
    1,315,218.72/1,814,485.38 = 763,840.56/x
  3. Step 3: Cross multiply
    1,315,218.72x = 1,814,485.38 × 763,840.56
  4. Step 4: Simplify right side
    1,315,218.72x = 1,385,977,528,771.01
  5. Step 5: Solve for x
    x = 1,385,977,528,771.01/1,315,218.72
  6. Step 6: Final answer
    x = 1,053,800.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.