Home / 621,674,729.10-858,298,301.82-395,741,192.70

Finding the Fourth Proportional to 621,674,729.10, 858,298,301.82 and 395,741,192.70

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Solution

The fourth proportional to 621,674,729.10, 858,298,301.82 and 395,741,192.70 is: 546,369,311.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,674,729.10 : 858,298,301.82 = 395,741,192.70 : x
  2. Step 2: Convert to fraction form
    621,674,729.10/858,298,301.82 = 395,741,192.70/x
  3. Step 3: Cross multiply
    621,674,729.10x = 858,298,301.82 × 395,741,192.70
  4. Step 4: Simplify right side
    621,674,729.10x = 339,663,993,654,631,360
  5. Step 5: Solve for x
    x = 339,663,993,654,631,360/621,674,729.10
  6. Step 6: Final answer
    x = 546,369,311.40

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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.