Home / 874,371,949.20-1,311,704,890.20-261,018,176.40

Finding the Fourth Proportional to 874,371,949.20, 1,311,704,890.20 and 261,018,176.40

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Solution

The fourth proportional to 874,371,949.20, 1,311,704,890.20 and 261,018,176.40 is: 391,571,137.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,371,949.20 : 1,311,704,890.20 = 261,018,176.40 : x
  2. Step 2: Convert to fraction form
    874,371,949.20/1,311,704,890.20 = 261,018,176.40/x
  3. Step 3: Cross multiply
    874,371,949.20x = 1,311,704,890.20 × 261,018,176.40
  4. Step 4: Simplify right side
    874,371,949.20x = 342,378,818,414,966,272
  5. Step 5: Solve for x
    x = 342,378,818,414,966,272/874,371,949.20
  6. Step 6: Final answer
    x = 391,571,137.12

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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.