Home / 1,207,486,109.20-1,666,336,473.64-685,993,956.88

Finding the Fourth Proportional to 1,207,486,109.20, 1,666,336,473.64 and 685,993,956.88

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Solution

The fourth proportional to 1,207,486,109.20, 1,666,336,473.64 and 685,993,956.88 is: 946,674,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,486,109.20 : 1,666,336,473.64 = 685,993,956.88 : x
  2. Step 2: Convert to fraction form
    1,207,486,109.20/1,666,336,473.64 = 685,993,956.88/x
  3. Step 3: Cross multiply
    1,207,486,109.20x = 1,666,336,473.64 × 685,993,956.88
  4. Step 4: Simplify right side
    1,207,486,109.20x = 1,143,096,751,045,769,472
  5. Step 5: Solve for x
    x = 1,143,096,751,045,769,472/1,207,486,109.20
  6. Step 6: Final answer
    x = 946,674,866.35

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1.5x scale

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.