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Finding the Fourth Proportional to 653,047.20, 978,361.20 and 371,728.80

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Solution

The fourth proportional to 653,047.20, 978,361.20 and 371,728.80 is: 556,904.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,047.20 : 978,361.20 = 371,728.80 : x
  2. Step 2: Convert to fraction form
    653,047.20/978,361.20 = 371,728.80/x
  3. Step 3: Cross multiply
    653,047.20x = 978,361.20 × 371,728.80
  4. Step 4: Simplify right side
    653,047.20x = 363,685,034,842.56
  5. Step 5: Solve for x
    x = 363,685,034,842.56/653,047.20
  6. Step 6: Final answer
    x = 556,904.67

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