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Finding the Fourth Proportional to 490,756.28, 677,239.64 and 275,897.28

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Solution

The fourth proportional to 490,756.28, 677,239.64 and 275,897.28 is: 380,735.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,756.28 : 677,239.64 = 275,897.28 : x
  2. Step 2: Convert to fraction form
    490,756.28/677,239.64 = 275,897.28/x
  3. Step 3: Cross multiply
    490,756.28x = 677,239.64 × 275,897.28
  4. Step 4: Simplify right side
    490,756.28x = 186,848,574,584.18
  5. Step 5: Solve for x
    x = 186,848,574,584.18/490,756.28
  6. Step 6: Final answer
    x = 380,735.98

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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.