Home / 621,943,063.56-857,712,996.53-486,171,236.92

Finding the Fourth Proportional to 621,943,063.56, 857,712,996.53 and 486,171,236.92

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Solution

The fourth proportional to 621,943,063.56, 857,712,996.53 and 486,171,236.92 is: 670,471,965.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,943,063.56 : 857,712,996.53 = 486,171,236.92 : x
  2. Step 2: Convert to fraction form
    621,943,063.56/857,712,996.53 = 486,171,236.92/x
  3. Step 3: Cross multiply
    621,943,063.56x = 857,712,996.53 × 486,171,236.92
  4. Step 4: Simplify right side
    621,943,063.56x = 416,995,388,445,349,760
  5. Step 5: Solve for x
    x = 416,995,388,445,349,760/621,943,063.56
  6. Step 6: Final answer
    x = 670,471,965.81

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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.