Home / 547,283,503.89-820,925,255.03-138,339,654.39

Finding the Fourth Proportional to 547,283,503.89, 820,925,255.03 and 138,339,654.39

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Solution

The fourth proportional to 547,283,503.89, 820,925,255.03 and 138,339,654.39 is: 207,509,481.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,283,503.89 : 820,925,255.03 = 138,339,654.39 : x
  2. Step 2: Convert to fraction form
    547,283,503.89/820,925,255.03 = 138,339,654.39/x
  3. Step 3: Cross multiply
    547,283,503.89x = 820,925,255.03 × 138,339,654.39
  4. Step 4: Simplify right side
    547,283,503.89x = 113,566,516,060,181,088
  5. Step 5: Solve for x
    x = 113,566,516,060,181,088/547,283,503.89
  6. Step 6: Final answer
    x = 207,509,481.38

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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.