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Finding the Fourth Proportional to 557,625.95, 769,509.29 and 315,902.31

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Solution

The fourth proportional to 557,625.95, 769,509.29 and 315,902.31 is: 435,936.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,625.95 : 769,509.29 = 315,902.31 : x
  2. Step 2: Convert to fraction form
    557,625.95/769,509.29 = 315,902.31/x
  3. Step 3: Cross multiply
    557,625.95x = 769,509.29 × 315,902.31
  4. Step 4: Simplify right side
    557,625.95x = 243,089,763,067.22
  5. Step 5: Solve for x
    x = 243,089,763,067.22/557,625.95
  6. Step 6: Final answer
    x = 435,936.96

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1.5x scale

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.