Home / 393,077,013,629.38-589,674,475,088.85-138,061,449,318.27

Finding the Fourth Proportional to 393,077,013,629.38, 589,674,475,088.85 and 138,061,449,318.27

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Solution

The fourth proportional to 393,077,013,629.38, 589,674,475,088.85 and 138,061,449,318.27 is: 207,112,880,768.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,077,013,629.38 : 589,674,475,088.85 = 138,061,449,318.27 : x
  2. Step 2: Convert to fraction form
    393,077,013,629.38/589,674,475,088.85 = 138,061,449,318.27/x
  3. Step 3: Cross multiply
    393,077,013,629.38x = 589,674,475,088.85 × 138,061,449,318.27
  4. Step 4: Simplify right side
    393,077,013,629.38x = 81,411,312,656,756,718,436,352
  5. Step 5: Solve for x
    x = 81,411,312,656,756,718,436,352/393,077,013,629.38
  6. Step 6: Final answer
    x = 207,112,880,768.75

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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.