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Finding the Fourth Proportional to 595,031.79, 821,028.31 and 353,390.16

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Solution

The fourth proportional to 595,031.79, 821,028.31 and 353,390.16 is: 487,609.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    595,031.79 : 821,028.31 = 353,390.16 : x
  2. Step 2: Convert to fraction form
    595,031.79/821,028.31 = 353,390.16/x
  3. Step 3: Cross multiply
    595,031.79x = 821,028.31 × 353,390.16
  4. Step 4: Simplify right side
    595,031.79x = 290,143,325,835.43
  5. Step 5: Solve for x
    x = 290,143,325,835.43/595,031.79
  6. Step 6: Final answer
    x = 487,609.79

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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.