Home / 387,172,833,928.33-534,300,171,911.25-211,193,134,890.78

Finding the Fourth Proportional to 387,172,833,928.33, 534,300,171,911.25 and 211,193,134,890.78

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Solution

The fourth proportional to 387,172,833,928.33, 534,300,171,911.25 and 211,193,134,890.78 is: 291,447,432,232.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,172,833,928.33 : 534,300,171,911.25 = 211,193,134,890.78 : x
  2. Step 2: Convert to fraction form
    387,172,833,928.33/534,300,171,911.25 = 211,193,134,890.78/x
  3. Step 3: Cross multiply
    387,172,833,928.33x = 534,300,171,911.25 × 211,193,134,890.78
  4. Step 4: Simplify right side
    387,172,833,928.33x = 112,840,528,278,619,569,520,640
  5. Step 5: Solve for x
    x = 112,840,528,278,619,569,520,640/387,172,833,928.33
  6. Step 6: Final answer
    x = 291,447,432,232.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.