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Finding the Fourth Proportional to 978,205.70, 1,467,308.55 and 505,813.70

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Solution

The fourth proportional to 978,205.70, 1,467,308.55 and 505,813.70 is: 758,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,205.70 : 1,467,308.55 = 505,813.70 : x
  2. Step 2: Convert to fraction form
    978,205.70/1,467,308.55 = 505,813.70/x
  3. Step 3: Cross multiply
    978,205.70x = 1,467,308.55 × 505,813.70
  4. Step 4: Simplify right side
    978,205.70x = 742,184,766,717.14
  5. Step 5: Solve for x
    x = 742,184,766,717.14/978,205.70
  6. Step 6: Final answer
    x = 758,720.55

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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.