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Finding the Fourth Proportional to 662,021.91, 913,692.15 and 375,481.17

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Solution

The fourth proportional to 662,021.91, 913,692.15 and 375,481.17 is: 518,221.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,021.91 : 913,692.15 = 375,481.17 : x
  2. Step 2: Convert to fraction form
    662,021.91/913,692.15 = 375,481.17/x
  3. Step 3: Cross multiply
    662,021.91x = 913,692.15 × 375,481.17
  4. Step 4: Simplify right side
    662,021.91x = 343,074,197,501.82
  5. Step 5: Solve for x
    x = 343,074,197,501.82/662,021.91
  6. Step 6: Final answer
    x = 518,221.82

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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.