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Finding the Fourth Proportional to 557,779.20, 836,323.20 and 321,004.80

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Solution

The fourth proportional to 557,779.20, 836,323.20 and 321,004.80 is: 481,308.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,779.20 : 836,323.20 = 321,004.80 : x
  2. Step 2: Convert to fraction form
    557,779.20/836,323.20 = 321,004.80/x
  3. Step 3: Cross multiply
    557,779.20x = 836,323.20 × 321,004.80
  4. Step 4: Simplify right side
    557,779.20x = 268,463,761,551.36
  5. Step 5: Solve for x
    x = 268,463,761,551.36/557,779.20
  6. Step 6: Final answer
    x = 481,308.31

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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.