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Finding the Fourth Proportional to 994,282.80, 1,491,672.60 and 320,427.60

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Solution

The fourth proportional to 994,282.80, 1,491,672.60 and 320,427.60 is: 480,721.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,282.80 : 1,491,672.60 = 320,427.60 : x
  2. Step 2: Convert to fraction form
    994,282.80/1,491,672.60 = 320,427.60/x
  3. Step 3: Cross multiply
    994,282.80x = 1,491,672.60 × 320,427.60
  4. Step 4: Simplify right side
    994,282.80x = 477,973,071,203.76
  5. Step 5: Solve for x
    x = 477,973,071,203.76/994,282.80
  6. Step 6: Final answer
    x = 480,721.45

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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.