Home / 680,509,708.80-1,020,764,563.20-317,040,806.40

Finding the Fourth Proportional to 680,509,708.80, 1,020,764,563.20 and 317,040,806.40

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Solution

The fourth proportional to 680,509,708.80, 1,020,764,563.20 and 317,040,806.40 is: 475,561,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,509,708.80 : 1,020,764,563.20 = 317,040,806.40 : x
  2. Step 2: Convert to fraction form
    680,509,708.80/1,020,764,563.20 = 317,040,806.40/x
  3. Step 3: Cross multiply
    680,509,708.80x = 1,020,764,563.20 × 317,040,806.40
  4. Step 4: Simplify right side
    680,509,708.80x = 323,624,020,261,471,744
  5. Step 5: Solve for x
    x = 323,624,020,261,471,744/680,509,708.80
  6. Step 6: Final answer
    x = 475,561,209.60

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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.