Home / 851,911,539.78-1,167,113,365.08-820,054,009.94

Finding the Fourth Proportional to 851,911,539.78, 1,167,113,365.08 and 820,054,009.94

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Solution

The fourth proportional to 851,911,539.78, 1,167,113,365.08 and 820,054,009.94 is: 1,123,468,752.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,911,539.78 : 1,167,113,365.08 = 820,054,009.94 : x
  2. Step 2: Convert to fraction form
    851,911,539.78/1,167,113,365.08 = 820,054,009.94/x
  3. Step 3: Cross multiply
    851,911,539.78x = 1,167,113,365.08 × 820,054,009.94
  4. Step 4: Simplify right side
    851,911,539.78x = 957,095,995,082,585,472
  5. Step 5: Solve for x
    x = 957,095,995,082,585,472/851,911,539.78
  6. Step 6: Final answer
    x = 1,123,468,752.79

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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.