Home / 621,561,784.38-857,775,563.82-339,319,274.55

Finding the Fourth Proportional to 621,561,784.38, 857,775,563.82 and 339,319,274.55

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Solution

The fourth proportional to 621,561,784.38, 857,775,563.82 and 339,319,274.55 is: 468,271,681.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,561,784.38 : 857,775,563.82 = 339,319,274.55 : x
  2. Step 2: Convert to fraction form
    621,561,784.38/857,775,563.82 = 339,319,274.55/x
  3. Step 3: Cross multiply
    621,561,784.38x = 857,775,563.82 × 339,319,274.55
  4. Step 4: Simplify right side
    621,561,784.38x = 291,059,782,042,119,680
  5. Step 5: Solve for x
    x = 291,059,782,042,119,680/621,561,784.38
  6. Step 6: Final answer
    x = 468,271,681.68

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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.