Home / 624,880,748.40-862,659,909.72-485,339,080.56

Finding the Fourth Proportional to 624,880,748.40, 862,659,909.72 and 485,339,080.56

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Solution

The fourth proportional to 624,880,748.40, 862,659,909.72 and 485,339,080.56 is: 670,019,949.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,880,748.40 : 862,659,909.72 = 485,339,080.56 : x
  2. Step 2: Convert to fraction form
    624,880,748.40/862,659,909.72 = 485,339,080.56/x
  3. Step 3: Cross multiply
    624,880,748.40x = 862,659,909.72 × 485,339,080.56
  4. Step 4: Simplify right side
    624,880,748.40x = 418,682,567,419,477,440
  5. Step 5: Solve for x
    x = 418,682,567,419,477,440/624,880,748.40
  6. Step 6: Final answer
    x = 670,019,949.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.