Home / 489,969,100.80-734,953,651.20-217,339,867.80

Finding the Fourth Proportional to 489,969,100.80, 734,953,651.20 and 217,339,867.80

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Solution

The fourth proportional to 489,969,100.80, 734,953,651.20 and 217,339,867.80 is: 326,009,801.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,969,100.80 : 734,953,651.20 = 217,339,867.80 : x
  2. Step 2: Convert to fraction form
    489,969,100.80/734,953,651.20 = 217,339,867.80/x
  3. Step 3: Cross multiply
    489,969,100.80x = 734,953,651.20 × 217,339,867.80
  4. Step 4: Simplify right side
    489,969,100.80x = 159,734,729,390,935,328
  5. Step 5: Solve for x
    x = 159,734,729,390,935,328/489,969,100.80
  6. Step 6: Final answer
    x = 326,009,801.70

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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.