Home / 827,093,329.20-1,240,639,993.80-438,716,246.40

Finding the Fourth Proportional to 827,093,329.20, 1,240,639,993.80 and 438,716,246.40

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Solution

The fourth proportional to 827,093,329.20, 1,240,639,993.80 and 438,716,246.40 is: 658,074,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,093,329.20 : 1,240,639,993.80 = 438,716,246.40 : x
  2. Step 2: Convert to fraction form
    827,093,329.20/1,240,639,993.80 = 438,716,246.40/x
  3. Step 3: Cross multiply
    827,093,329.20x = 1,240,639,993.80 × 438,716,246.40
  4. Step 4: Simplify right side
    827,093,329.20x = 544,288,921,213,655,232
  5. Step 5: Solve for x
    x = 544,288,921,213,655,232/827,093,329.20
  6. Step 6: Final answer
    x = 658,074,369.60

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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.