Home / 763,383,467.20-1,145,075,200.80-645,138,500.80

Finding the Fourth Proportional to 763,383,467.20, 1,145,075,200.80 and 645,138,500.80

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Solution

The fourth proportional to 763,383,467.20, 1,145,075,200.80 and 645,138,500.80 is: 967,707,751.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,383,467.20 : 1,145,075,200.80 = 645,138,500.80 : x
  2. Step 2: Convert to fraction form
    763,383,467.20/1,145,075,200.80 = 645,138,500.80/x
  3. Step 3: Cross multiply
    763,383,467.20x = 1,145,075,200.80 × 645,138,500.80
  4. Step 4: Simplify right side
    763,383,467.20x = 738,732,098,347,370,880
  5. Step 5: Solve for x
    x = 738,732,098,347,370,880/763,383,467.20
  6. Step 6: Final answer
    x = 967,707,751.20

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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.