Home / 621,561,800.88-857,775,586.86-339,319,291.05

Finding the Fourth Proportional to 621,561,800.88, 857,775,586.86 and 339,319,291.05

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Solution

The fourth proportional to 621,561,800.88, 857,775,586.86 and 339,319,291.05 is: 468,271,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,561,800.88 : 857,775,586.86 = 339,319,291.05 : x
  2. Step 2: Convert to fraction form
    621,561,800.88/857,775,586.86 = 339,319,291.05/x
  3. Step 3: Cross multiply
    621,561,800.88x = 857,775,586.86 × 339,319,291.05
  4. Step 4: Simplify right side
    621,561,800.88x = 291,059,804,013,332,928
  5. Step 5: Solve for x
    x = 291,059,804,013,332,928/621,561,800.88
  6. Step 6: Final answer
    x = 468,271,704.60

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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.