Home / 1,328,598,902.20-1,992,898,353.30-638,339,711.80

Finding the Fourth Proportional to 1,328,598,902.20, 1,992,898,353.30 and 638,339,711.80

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Solution

The fourth proportional to 1,328,598,902.20, 1,992,898,353.30 and 638,339,711.80 is: 957,509,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,598,902.20 : 1,992,898,353.30 = 638,339,711.80 : x
  2. Step 2: Convert to fraction form
    1,328,598,902.20/1,992,898,353.30 = 638,339,711.80/x
  3. Step 3: Cross multiply
    1,328,598,902.20x = 1,992,898,353.30 × 638,339,711.80
  4. Step 4: Simplify right side
    1,328,598,902.20x = 1,272,146,160,492,216,576
  5. Step 5: Solve for x
    x = 1,272,146,160,492,216,576/1,328,598,902.20
  6. Step 6: Final answer
    x = 957,509,567.70

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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.