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Finding the Fourth Proportional to 612,847.56, 917,634.06 and 359,920.20

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Solution

The fourth proportional to 612,847.56, 917,634.06 and 359,920.20 is: 538,918.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,847.56 : 917,634.06 = 359,920.20 : x
  2. Step 2: Convert to fraction form
    612,847.56/917,634.06 = 359,920.20/x
  3. Step 3: Cross multiply
    612,847.56x = 917,634.06 × 359,920.20
  4. Step 4: Simplify right side
    612,847.56x = 330,275,034,402.01
  5. Step 5: Solve for x
    x = 330,275,034,402.01/612,847.56
  6. Step 6: Final answer
    x = 538,918.74

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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.