Home / 1,986,569,438.66-2,979,755,101.22-742,908,469.98

Finding the Fourth Proportional to 1,986,569,438.66, 2,979,755,101.22 and 742,908,469.98

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Solution

The fourth proportional to 1,986,569,438.66, 2,979,755,101.22 and 742,908,469.98 is: 1,114,325,661.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,569,438.66 : 2,979,755,101.22 = 742,908,469.98 : x
  2. Step 2: Convert to fraction form
    1,986,569,438.66/2,979,755,101.22 = 742,908,469.98/x
  3. Step 3: Cross multiply
    1,986,569,438.66x = 2,979,755,101.22 × 742,908,469.98
  4. Step 4: Simplify right side
    1,986,569,438.66x = 2,213,685,303,162,450,176
  5. Step 5: Solve for x
    x = 2,213,685,303,162,450,176/1,986,569,438.66
  6. Step 6: Final answer
    x = 1,114,325,661.15

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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.