Home / 1,187,383,489.31-1,781,074,051.37-813,523,012.67

Finding the Fourth Proportional to 1,187,383,489.31, 1,781,074,051.37 and 813,523,012.67

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Solution

The fourth proportional to 1,187,383,489.31, 1,781,074,051.37 and 813,523,012.67 is: 1,220,283,708.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,383,489.31 : 1,781,074,051.37 = 813,523,012.67 : x
  2. Step 2: Convert to fraction form
    1,187,383,489.31/1,781,074,051.37 = 813,523,012.67/x
  3. Step 3: Cross multiply
    1,187,383,489.31x = 1,781,074,051.37 × 813,523,012.67
  4. Step 4: Simplify right side
    1,187,383,489.31x = 1,448,944,728,045,911,808
  5. Step 5: Solve for x
    x = 1,448,944,728,045,911,808/1,187,383,489.31
  6. Step 6: Final answer
    x = 1,220,283,708.76

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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.