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Finding the Fourth Proportional to 659,604.87, 910,270.14 and 369,209.21

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Solution

The fourth proportional to 659,604.87, 910,270.14 and 369,209.21 is: 509,517.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,604.87 : 910,270.14 = 369,209.21 : x
  2. Step 2: Convert to fraction form
    659,604.87/910,270.14 = 369,209.21/x
  3. Step 3: Cross multiply
    659,604.87x = 910,270.14 × 369,209.21
  4. Step 4: Simplify right side
    659,604.87x = 336,080,121,551.67
  5. Step 5: Solve for x
    x = 336,080,121,551.67/659,604.87
  6. Step 6: Final answer
    x = 509,517.34

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Double scale
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Similar ratio
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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.