Home / 638,223,641.80-957,807,321.90-255,545,830.60

Finding the Fourth Proportional to 638,223,641.80, 957,807,321.90 and 255,545,830.60

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Solution

The fourth proportional to 638,223,641.80, 957,807,321.90 and 255,545,830.60 is: 383,507,679.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,223,641.80 : 957,807,321.90 = 255,545,830.60 : x
  2. Step 2: Convert to fraction form
    638,223,641.80/957,807,321.90 = 255,545,830.60/x
  3. Step 3: Cross multiply
    638,223,641.80x = 957,807,321.90 × 255,545,830.60
  4. Step 4: Simplify right side
    638,223,641.80x = 244,763,667,629,697,056
  5. Step 5: Solve for x
    x = 244,763,667,629,697,056/638,223,641.80
  6. Step 6: Final answer
    x = 383,507,679.13

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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.