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Finding the Fourth Proportional to 490,883.70, 677,406.02 and 276,018.24

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Solution

The fourth proportional to 490,883.70, 677,406.02 and 276,018.24 is: 380,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,883.70 : 677,406.02 = 276,018.24 : x
  2. Step 2: Convert to fraction form
    490,883.70/677,406.02 = 276,018.24/x
  3. Step 3: Cross multiply
    490,883.70x = 677,406.02 × 276,018.24
  4. Step 4: Simplify right side
    490,883.70x = 186,976,417,405.81
  5. Step 5: Solve for x
    x = 186,976,417,405.81/490,883.70
  6. Step 6: Final answer
    x = 380,897.59

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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.