Home / 420,270,647.60-629,555,665.80-291,024,196.40

Finding the Fourth Proportional to 420,270,647.60, 629,555,665.80 and 291,024,196.40

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Solution

The fourth proportional to 420,270,647.60, 629,555,665.80 and 291,024,196.40 is: 435,947,484.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,270,647.60 : 629,555,665.80 = 291,024,196.40 : x
  2. Step 2: Convert to fraction form
    420,270,647.60/629,555,665.80 = 291,024,196.40/x
  3. Step 3: Cross multiply
    420,270,647.60x = 629,555,665.80 × 291,024,196.40
  4. Step 4: Simplify right side
    420,270,647.60x = 183,215,931,728,511,936
  5. Step 5: Solve for x
    x = 183,215,931,728,511,936/420,270,647.60
  6. Step 6: Final answer
    x = 435,947,484.73

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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.