Home / 1,187,628,720.91-1,781,385,139.23-440,789,811.46

Finding the Fourth Proportional to 1,187,628,720.91, 1,781,385,139.23 and 440,789,811.46

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Solution

The fourth proportional to 1,187,628,720.91, 1,781,385,139.23 and 440,789,811.46 is: 661,163,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,628,720.91 : 1,781,385,139.23 = 440,789,811.46 : x
  2. Step 2: Convert to fraction form
    1,187,628,720.91/1,781,385,139.23 = 440,789,811.46/x
  3. Step 3: Cross multiply
    1,187,628,720.91x = 1,781,385,139.23 × 440,789,811.46
  4. Step 4: Simplify right side
    1,187,628,720.91x = 785,216,419,658,837,504
  5. Step 5: Solve for x
    x = 785,216,419,658,837,504/1,187,628,720.91
  6. Step 6: Final answer
    x = 661,163,211.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.