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Finding the Fourth Proportional to 521,186.36, 780,761.44 and 359,051.80

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Solution

The fourth proportional to 521,186.36, 780,761.44 and 359,051.80 is: 537,876.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,186.36 : 780,761.44 = 359,051.80 : x
  2. Step 2: Convert to fraction form
    521,186.36/780,761.44 = 359,051.80/x
  3. Step 3: Cross multiply
    521,186.36x = 780,761.44 × 359,051.80
  4. Step 4: Simplify right side
    521,186.36x = 280,333,800,402.59
  5. Step 5: Solve for x
    x = 280,333,800,402.59/521,186.36
  6. Step 6: Final answer
    x = 537,876.32

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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.