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Finding the Fourth Proportional to 767,697.80, 1,059,080.34 and 445,221

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Solution

The fourth proportional to 767,697.80, 1,059,080.34 and 445,221 is: 614,206.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,697.80 : 1,059,080.34 = 445,221 : x
  2. Step 2: Convert to fraction form
    767,697.80/1,059,080.34 = 445,221/x
  3. Step 3: Cross multiply
    767,697.80x = 1,059,080.34 × 445,221
  4. Step 4: Simplify right side
    767,697.80x = 471,524,808,055.14
  5. Step 5: Solve for x
    x = 471,524,808,055.14/767,697.80
  6. Step 6: Final answer
    x = 614,206.28

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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.