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Finding the Fourth Proportional to 551,125.06, 760,493.84 and 309,434.22

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Solution

The fourth proportional to 551,125.06, 760,493.84 and 309,434.22 is: 426,986.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,125.06 : 760,493.84 = 309,434.22 : x
  2. Step 2: Convert to fraction form
    551,125.06/760,493.84 = 309,434.22/x
  3. Step 3: Cross multiply
    551,125.06x = 760,493.84 × 309,434.22
  4. Step 4: Simplify right side
    551,125.06x = 235,322,816,648.03
  5. Step 5: Solve for x
    x = 235,322,816,648.03/551,125.06
  6. Step 6: Final answer
    x = 426,986.24

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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.