Home / 621,143,404.80-931,715,107.20-477,816,172.80

Finding the Fourth Proportional to 621,143,404.80, 931,715,107.20 and 477,816,172.80

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Solution

The fourth proportional to 621,143,404.80, 931,715,107.20 and 477,816,172.80 is: 716,724,259.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,143,404.80 : 931,715,107.20 = 477,816,172.80 : x
  2. Step 2: Convert to fraction form
    621,143,404.80/931,715,107.20 = 477,816,172.80/x
  3. Step 3: Cross multiply
    621,143,404.80x = 931,715,107.20 × 477,816,172.80
  4. Step 4: Simplify right side
    621,143,404.80x = 445,188,546,662,245,760
  5. Step 5: Solve for x
    x = 445,188,546,662,245,760/621,143,404.80
  6. Step 6: Final answer
    x = 716,724,259.20

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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.