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Finding the Fourth Proportional to 490,895.98, 677,440.49 and 276,034.16

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Solution

The fourth proportional to 490,895.98, 677,440.49 and 276,034.16 is: 380,929.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,895.98 : 677,440.49 = 276,034.16 : x
  2. Step 2: Convert to fraction form
    490,895.98/677,440.49 = 276,034.16/x
  3. Step 3: Cross multiply
    490,895.98x = 677,440.49 × 276,034.16
  4. Step 4: Simplify right side
    490,895.98x = 186,996,716,920.57
  5. Step 5: Solve for x
    x = 186,996,716,920.57/490,895.98
  6. Step 6: Final answer
    x = 380,929.41

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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.