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Finding the Fourth Proportional to 587,402.28, 810,599.40 and 345,699.09

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Solution

The fourth proportional to 587,402.28, 810,599.40 and 345,699.09 is: 477,055.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,402.28 : 810,599.40 = 345,699.09 : x
  2. Step 2: Convert to fraction form
    587,402.28/810,599.40 = 345,699.09/x
  3. Step 3: Cross multiply
    587,402.28x = 810,599.40 × 345,699.09
  4. Step 4: Simplify right side
    587,402.28x = 280,223,474,934.55
  5. Step 5: Solve for x
    x = 280,223,474,934.55/587,402.28
  6. Step 6: Final answer
    x = 477,055.48

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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.