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Finding the Fourth Proportional to 707,918.55, 976,926 and 385,627.86

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Solution

The fourth proportional to 707,918.55, 976,926 and 385,627.86 is: 532,165.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,918.55 : 976,926 = 385,627.86 : x
  2. Step 2: Convert to fraction form
    707,918.55/976,926 = 385,627.86/x
  3. Step 3: Cross multiply
    707,918.55x = 976,926 × 385,627.86
  4. Step 4: Simplify right side
    707,918.55x = 376,729,882,758.36
  5. Step 5: Solve for x
    x = 376,729,882,758.36/707,918.55
  6. Step 6: Final answer
    x = 532,165.58

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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.