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Finding the Fourth Proportional to 520,770.24, 718,665.60 and 303,107.76

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Solution

The fourth proportional to 520,770.24, 718,665.60 and 303,107.76 is: 418,290.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,770.24 : 718,665.60 = 303,107.76 : x
  2. Step 2: Convert to fraction form
    520,770.24/718,665.60 = 303,107.76/x
  3. Step 3: Cross multiply
    520,770.24x = 718,665.60 × 303,107.76
  4. Step 4: Simplify right side
    520,770.24x = 217,833,120,205.06
  5. Step 5: Solve for x
    x = 217,833,120,205.06/520,770.24
  6. Step 6: Final answer
    x = 418,290.26

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1.5x scale

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.