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Finding the Fourth Proportional to 539,093.20, 808,639.80 and 371,131.60

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Solution

The fourth proportional to 539,093.20, 808,639.80 and 371,131.60 is: 556,697.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,093.20 : 808,639.80 = 371,131.60 : x
  2. Step 2: Convert to fraction form
    539,093.20/808,639.80 = 371,131.60/x
  3. Step 3: Cross multiply
    539,093.20x = 808,639.80 × 371,131.60
  4. Step 4: Simplify right side
    539,093.20x = 300,111,782,797.68
  5. Step 5: Solve for x
    x = 300,111,782,797.68/539,093.20
  6. Step 6: Final answer
    x = 556,697.40

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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.