Home / 621,695,970.16-858,015,670.43-353,836,928.84

Finding the Fourth Proportional to 621,695,970.16, 858,015,670.43 and 353,836,928.84

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Solution

The fourth proportional to 621,695,970.16, 858,015,670.43 and 353,836,928.84 is: 488,337,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,695,970.16 : 858,015,670.43 = 353,836,928.84 : x
  2. Step 2: Convert to fraction form
    621,695,970.16/858,015,670.43 = 353,836,928.84/x
  3. Step 3: Cross multiply
    621,695,970.16x = 858,015,670.43 × 353,836,928.84
  4. Step 4: Simplify right side
    621,695,970.16x = 303,597,629,715,485,504
  5. Step 5: Solve for x
    x = 303,597,629,715,485,504/621,695,970.16
  6. Step 6: Final answer
    x = 488,337,779.70

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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.