Home / 756,478,782.32-1,043,895,729.48-438,914,426.96

Finding the Fourth Proportional to 756,478,782.32, 1,043,895,729.48 and 438,914,426.96

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Solution

The fourth proportional to 756,478,782.32, 1,043,895,729.48 and 438,914,426.96 is: 605,675,805.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,478,782.32 : 1,043,895,729.48 = 438,914,426.96 : x
  2. Step 2: Convert to fraction form
    756,478,782.32/1,043,895,729.48 = 438,914,426.96/x
  3. Step 3: Cross multiply
    756,478,782.32x = 1,043,895,729.48 × 438,914,426.96
  4. Step 4: Simplify right side
    756,478,782.32x = 458,180,895,910,705,344
  5. Step 5: Solve for x
    x = 458,180,895,910,705,344/756,478,782.32
  6. Step 6: Final answer
    x = 605,675,805.61

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1.5x scale

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.