Home / 621,635,356.44-857,834,302.68-343,170,900.72

Finding the Fourth Proportional to 621,635,356.44, 857,834,302.68 and 343,170,900.72

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Solution

The fourth proportional to 621,635,356.44, 857,834,302.68 and 343,170,900.72 is: 473,563,427.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,635,356.44 : 857,834,302.68 = 343,170,900.72 : x
  2. Step 2: Convert to fraction form
    621,635,356.44/857,834,302.68 = 343,170,900.72/x
  3. Step 3: Cross multiply
    621,635,356.44x = 857,834,302.68 × 343,170,900.72
  4. Step 4: Simplify right side
    621,635,356.44x = 294,383,770,319,208,704
  5. Step 5: Solve for x
    x = 294,383,770,319,208,704/621,635,356.44
  6. Step 6: Final answer
    x = 473,563,427.93

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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.