Home / 420,381,828.42-630,687,786.12-202,214,669.10

Finding the Fourth Proportional to 420,381,828.42, 630,687,786.12 and 202,214,669.10

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Solution

The fourth proportional to 420,381,828.42, 630,687,786.12 and 202,214,669.10 is: 303,377,342.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,381,828.42 : 630,687,786.12 = 202,214,669.10 : x
  2. Step 2: Convert to fraction form
    420,381,828.42/630,687,786.12 = 202,214,669.10/x
  3. Step 3: Cross multiply
    420,381,828.42x = 630,687,786.12 × 202,214,669.10
  4. Step 4: Simplify right side
    420,381,828.42x = 127,534,321,975,667,376
  5. Step 5: Solve for x
    x = 127,534,321,975,667,376/420,381,828.42
  6. Step 6: Final answer
    x = 303,377,342.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.