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Finding the Fourth Proportional to 557,325.90, 769,175.40 and 330,971.40

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Solution

The fourth proportional to 557,325.90, 769,175.40 and 330,971.40 is: 456,779.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,325.90 : 769,175.40 = 330,971.40 : x
  2. Step 2: Convert to fraction form
    557,325.90/769,175.40 = 330,971.40/x
  3. Step 3: Cross multiply
    557,325.90x = 769,175.40 × 330,971.40
  4. Step 4: Simplify right side
    557,325.90x = 254,575,058,983.56
  5. Step 5: Solve for x
    x = 254,575,058,983.56/557,325.90
  6. Step 6: Final answer
    x = 456,779.52

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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.