Home / 1,126,677,644.94-1,688,823,670.92-378,981,627.51

Finding the Fourth Proportional to 1,126,677,644.94, 1,688,823,670.92 and 378,981,627.51

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Solution

The fourth proportional to 1,126,677,644.94, 1,688,823,670.92 and 378,981,627.51 is: 568,071,219.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,677,644.94 : 1,688,823,670.92 = 378,981,627.51 : x
  2. Step 2: Convert to fraction form
    1,126,677,644.94/1,688,823,670.92 = 378,981,627.51/x
  3. Step 3: Cross multiply
    1,126,677,644.94x = 1,688,823,670.92 × 378,981,627.51
  4. Step 4: Simplify right side
    1,126,677,644.94x = 640,033,143,382,674,304
  5. Step 5: Solve for x
    x = 640,033,143,382,674,304/1,126,677,644.94
  6. Step 6: Final answer
    x = 568,071,219.18

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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.