Home / 861,174.56-1,290,923.76-411,779.36

Finding the Fourth Proportional to 861,174.56, 1,290,923.76 and 411,779.36

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Solution

The fourth proportional to 861,174.56, 1,290,923.76 and 411,779.36 is: 617,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,174.56 : 1,290,923.76 = 411,779.36 : x
  2. Step 2: Convert to fraction form
    861,174.56/1,290,923.76 = 411,779.36/x
  3. Step 3: Cross multiply
    861,174.56x = 1,290,923.76 × 411,779.36
  4. Step 4: Simplify right side
    861,174.56x = 531,575,759,701.59
  5. Step 5: Solve for x
    x = 531,575,759,701.59/861,174.56
  6. Step 6: Final answer
    x = 617,268.30

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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.