Home / 393,077,013,631.65-589,674,475,092.20-138,061,449,320.51

Finding the Fourth Proportional to 393,077,013,631.65, 589,674,475,092.20 and 138,061,449,320.51

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Solution

The fourth proportional to 393,077,013,631.65, 589,674,475,092.20 and 138,061,449,320.51 is: 207,112,880,772.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,077,013,631.65 : 589,674,475,092.20 = 138,061,449,320.51 : x
  2. Step 2: Convert to fraction form
    393,077,013,631.65/589,674,475,092.20 = 138,061,449,320.51/x
  3. Step 3: Cross multiply
    393,077,013,631.65x = 589,674,475,092.20 × 138,061,449,320.51
  4. Step 4: Simplify right side
    393,077,013,631.65x = 81,411,312,658,540,102,942,720
  5. Step 5: Solve for x
    x = 81,411,312,658,540,102,942,720/393,077,013,631.65
  6. Step 6: Final answer
    x = 207,112,880,772.09

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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.