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Finding the Fourth Proportional to 399,104.55, 598,656.83 and 379,421.55

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Solution

The fourth proportional to 399,104.55, 598,656.83 and 379,421.55 is: 569,132.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,104.55 : 598,656.83 = 379,421.55 : x
  2. Step 2: Convert to fraction form
    399,104.55/598,656.83 = 379,421.55/x
  3. Step 3: Cross multiply
    399,104.55x = 598,656.83 × 379,421.55
  4. Step 4: Simplify right side
    399,104.55x = 227,143,300,459.58
  5. Step 5: Solve for x
    x = 227,143,300,459.58/399,104.55
  6. Step 6: Final answer
    x = 569,132.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.