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Finding the Fourth Proportional to 556,855.20, 835,282.80 and 320,925.60

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Solution

The fourth proportional to 556,855.20, 835,282.80 and 320,925.60 is: 481,388.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,855.20 : 835,282.80 = 320,925.60 : x
  2. Step 2: Convert to fraction form
    556,855.20/835,282.80 = 320,925.60/x
  3. Step 3: Cross multiply
    556,855.20x = 835,282.80 × 320,925.60
  4. Step 4: Simplify right side
    556,855.20x = 268,063,633,759.68
  5. Step 5: Solve for x
    x = 268,063,633,759.68/556,855.20
  6. Step 6: Final answer
    x = 481,388.40

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Similar ratio
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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.