Home / 669,978,012.15-1,004,967,382.73-209,952,184.95

Finding the Fourth Proportional to 669,978,012.15, 1,004,967,382.73 and 209,952,184.95

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Solution

The fourth proportional to 669,978,012.15, 1,004,967,382.73 and 209,952,184.95 is: 314,928,391.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,978,012.15 : 1,004,967,382.73 = 209,952,184.95 : x
  2. Step 2: Convert to fraction form
    669,978,012.15/1,004,967,382.73 = 209,952,184.95/x
  3. Step 3: Cross multiply
    669,978,012.15x = 1,004,967,382.73 × 209,952,184.95
  4. Step 4: Simplify right side
    669,978,012.15x = 210,995,097,806,596,640
  5. Step 5: Solve for x
    x = 210,995,097,806,596,640/669,978,012.15
  6. Step 6: Final answer
    x = 314,928,391.65

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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.