Home / 921,622,660.21-1,382,435,320.83-376,364,194.21

Finding the Fourth Proportional to 921,622,660.21, 1,382,435,320.83 and 376,364,194.21

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Solution

The fourth proportional to 921,622,660.21, 1,382,435,320.83 and 376,364,194.21 is: 564,546,834.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,622,660.21 : 1,382,435,320.83 = 376,364,194.21 : x
  2. Step 2: Convert to fraction form
    921,622,660.21/1,382,435,320.83 = 376,364,194.21/x
  3. Step 3: Cross multiply
    921,622,660.21x = 1,382,435,320.83 × 376,364,194.21
  4. Step 4: Simplify right side
    921,622,660.21x = 520,299,155,571,625,728
  5. Step 5: Solve for x
    x = 520,299,155,571,625,728/921,622,660.21
  6. Step 6: Final answer
    x = 564,546,834.66

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1.5x scale

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.