Home / 1,270,263,831.25-1,905,184,409.72-384,738,653.42

Finding the Fourth Proportional to 1,270,263,831.25, 1,905,184,409.72 and 384,738,653.42

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Solution

The fourth proportional to 1,270,263,831.25, 1,905,184,409.72 and 384,738,653.42 is: 577,043,970.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,263,831.25 : 1,905,184,409.72 = 384,738,653.42 : x
  2. Step 2: Convert to fraction form
    1,270,263,831.25/1,905,184,409.72 = 384,738,653.42/x
  3. Step 3: Cross multiply
    1,270,263,831.25x = 1,905,184,409.72 × 384,738,653.42
  4. Step 4: Simplify right side
    1,270,263,831.25x = 732,998,084,310,526,720
  5. Step 5: Solve for x
    x = 732,998,084,310,526,720/1,270,263,831.25
  6. Step 6: Final answer
    x = 577,043,970.14

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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.