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Finding the Fourth Proportional to 707,530.55, 976,387.37 and 385,240.46

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Solution

The fourth proportional to 707,530.55, 976,387.37 and 385,240.46 is: 531,629.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,530.55 : 976,387.37 = 385,240.46 : x
  2. Step 2: Convert to fraction form
    707,530.55/976,387.37 = 385,240.46/x
  3. Step 3: Cross multiply
    707,530.55x = 976,387.37 × 385,240.46
  4. Step 4: Simplify right side
    707,530.55x = 376,143,912,748.85
  5. Step 5: Solve for x
    x = 376,143,912,748.85/707,530.55
  6. Step 6: Final answer
    x = 531,629.22

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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.