Home / 638,223,642.80-957,807,323.40-255,545,831.60

Finding the Fourth Proportional to 638,223,642.80, 957,807,323.40 and 255,545,831.60

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Solution

The fourth proportional to 638,223,642.80, 957,807,323.40 and 255,545,831.60 is: 383,507,680.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,223,642.80 : 957,807,323.40 = 255,545,831.60 : x
  2. Step 2: Convert to fraction form
    638,223,642.80/957,807,323.40 = 255,545,831.60/x
  3. Step 3: Cross multiply
    638,223,642.80x = 957,807,323.40 × 255,545,831.60
  4. Step 4: Simplify right side
    638,223,642.80x = 244,763,668,970,823,136
  5. Step 5: Solve for x
    x = 244,763,668,970,823,136/638,223,642.80
  6. Step 6: Final answer
    x = 383,507,680.63

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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.