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Finding the Fourth Proportional to 490,266.09, 676,596.11 and 369,193.77

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Solution

The fourth proportional to 490,266.09, 676,596.11 and 369,193.77 is: 509,509.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,266.09 : 676,596.11 = 369,193.77 : x
  2. Step 2: Convert to fraction form
    490,266.09/676,596.11 = 369,193.77/x
  3. Step 3: Cross multiply
    490,266.09x = 676,596.11 × 369,193.77
  4. Step 4: Simplify right side
    490,266.09x = 249,795,066,772.27
  5. Step 5: Solve for x
    x = 249,795,066,772.27/490,266.09
  6. Step 6: Final answer
    x = 509,509.17

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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.