Home / 638,223,639.80-957,807,318.90-255,545,828.60

Finding the Fourth Proportional to 638,223,639.80, 957,807,318.90 and 255,545,828.60

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Solution

The fourth proportional to 638,223,639.80, 957,807,318.90 and 255,545,828.60 is: 383,507,676.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,223,639.80 : 957,807,318.90 = 255,545,828.60 : x
  2. Step 2: Convert to fraction form
    638,223,639.80/957,807,318.90 = 255,545,828.60/x
  3. Step 3: Cross multiply
    638,223,639.80x = 957,807,318.90 × 255,545,828.60
  4. Step 4: Simplify right side
    638,223,639.80x = 244,763,664,947,444,928
  5. Step 5: Solve for x
    x = 244,763,664,947,444,928/638,223,639.80
  6. Step 6: Final answer
    x = 383,507,676.12

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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.