Home / 420,318,434.82-629,930,710.80-171,033,116.79

Finding the Fourth Proportional to 420,318,434.82, 629,930,710.80 and 171,033,116.79

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Solution

The fourth proportional to 420,318,434.82, 629,930,710.80 and 171,033,116.79 is: 256,327,117.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,318,434.82 : 629,930,710.80 = 171,033,116.79 : x
  2. Step 2: Convert to fraction form
    420,318,434.82/629,930,710.80 = 171,033,116.79/x
  3. Step 3: Cross multiply
    420,318,434.82x = 629,930,710.80 × 171,033,116.79
  4. Step 4: Simplify right side
    420,318,434.82x = 107,739,012,829,864,096
  5. Step 5: Solve for x
    x = 107,739,012,829,864,096/420,318,434.82
  6. Step 6: Final answer
    x = 256,327,117.50

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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.