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Finding the Fourth Proportional to 722,339,783.70, 996,834,003.36 and 392,314,922.70

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Solution

The fourth proportional to 722,339,783.70, 996,834,003.36 and 392,314,922.70 is: 541,397,364.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,339,783.70 : 996,834,003.36 = 392,314,922.70 : x
  2. Step 2: Convert to fraction form
    722,339,783.70/996,834,003.36 = 392,314,922.70/x
  3. Step 3: Cross multiply
    722,339,783.70x = 996,834,003.36 × 392,314,922.70
  4. Step 4: Simplify right side
    722,339,783.70x = 391,072,854,972,909,952
  5. Step 5: Solve for x
    x = 391,072,854,972,909,952/722,339,783.70
  6. Step 6: Final answer
    x = 541,397,364.23

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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.