Home / 1,160,120.78-1,600,942.59-643,844.70

Finding the Fourth Proportional to 1,160,120.78, 1,600,942.59 and 643,844.70

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Solution

The fourth proportional to 1,160,120.78, 1,600,942.59 and 643,844.70 is: 888,492.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160,120.78 : 1,600,942.59 = 643,844.70 : x
  2. Step 2: Convert to fraction form
    1,160,120.78/1,600,942.59 = 643,844.70/x
  3. Step 3: Cross multiply
    1,160,120.78x = 1,600,942.59 × 643,844.70
  4. Step 4: Simplify right side
    1,160,120.78x = 1,030,758,401,575.77
  5. Step 5: Solve for x
    x = 1,030,758,401,575.77/1,160,120.78
  6. Step 6: Final answer
    x = 888,492.32

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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.