Home / 1,391,344,629.95-1,920,980,161.21-1,068,898,306.69

Finding the Fourth Proportional to 1,391,344,629.95, 1,920,980,161.21 and 1,068,898,306.69

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Solution

The fourth proportional to 1,391,344,629.95, 1,920,980,161.21 and 1,068,898,306.69 is: 1,475,789,964.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,344,629.95 : 1,920,980,161.21 = 1,068,898,306.69 : x
  2. Step 2: Convert to fraction form
    1,391,344,629.95/1,920,980,161.21 = 1,068,898,306.69/x
  3. Step 3: Cross multiply
    1,391,344,629.95x = 1,920,980,161.21 × 1,068,898,306.69
  4. Step 4: Simplify right side
    1,391,344,629.95x = 2,053,332,441,504,308,224
  5. Step 5: Solve for x
    x = 2,053,332,441,504,308,224/1,391,344,629.95
  6. Step 6: Final answer
    x = 1,475,789,964.12

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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.