Home / 851,911,540.78-1,167,113,366.45-820,054,010.94

Finding the Fourth Proportional to 851,911,540.78, 1,167,113,366.45 and 820,054,010.94

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Solution

The fourth proportional to 851,911,540.78, 1,167,113,366.45 and 820,054,010.94 is: 1,123,468,754.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,911,540.78 : 1,167,113,366.45 = 820,054,010.94 : x
  2. Step 2: Convert to fraction form
    851,911,540.78/1,167,113,366.45 = 820,054,010.94/x
  3. Step 3: Cross multiply
    851,911,540.78x = 1,167,113,366.45 × 820,054,010.94
  4. Step 4: Simplify right side
    851,911,540.78x = 957,095,997,379,008,640
  5. Step 5: Solve for x
    x = 957,095,997,379,008,640/851,911,540.78
  6. Step 6: Final answer
    x = 1,123,468,754.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.