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Finding the Fourth Proportional to 490,973.40, 736,929.90 and 254,485.80

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Solution

The fourth proportional to 490,973.40, 736,929.90 and 254,485.80 is: 381,972.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,973.40 : 736,929.90 = 254,485.80 : x
  2. Step 2: Convert to fraction form
    490,973.40/736,929.90 = 254,485.80/x
  3. Step 3: Cross multiply
    490,973.40x = 736,929.90 × 254,485.80
  4. Step 4: Simplify right side
    490,973.40x = 187,538,195,145.42
  5. Step 5: Solve for x
    x = 187,538,195,145.42/490,973.40
  6. Step 6: Final answer
    x = 381,972.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.