Home / 1,555,015,223-2,145,965,797.50-859,698,988.76

Finding the Fourth Proportional to 1,555,015,223, 2,145,965,797.50 and 859,698,988.76

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Solution

The fourth proportional to 1,555,015,223, 2,145,965,797.50 and 859,698,988.76 is: 1,186,409,366.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,015,223 : 2,145,965,797.50 = 859,698,988.76 : x
  2. Step 2: Convert to fraction form
    1,555,015,223/2,145,965,797.50 = 859,698,988.76/x
  3. Step 3: Cross multiply
    1,555,015,223x = 2,145,965,797.50 × 859,698,988.76
  4. Step 4: Simplify right side
    1,555,015,223x = 1,844,884,626,024,296,960
  5. Step 5: Solve for x
    x = 1,844,884,626,024,296,960/1,555,015,223
  6. Step 6: Final answer
    x = 1,186,409,366.76

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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.