Home / 412,975,705.40-619,463,558.10-378,538,328.60

Finding the Fourth Proportional to 412,975,705.40, 619,463,558.10 and 378,538,328.60

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Solution

The fourth proportional to 412,975,705.40, 619,463,558.10 and 378,538,328.60 is: 567,807,492.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,975,705.40 : 619,463,558.10 = 378,538,328.60 : x
  2. Step 2: Convert to fraction form
    412,975,705.40/619,463,558.10 = 378,538,328.60/x
  3. Step 3: Cross multiply
    412,975,705.40x = 619,463,558.10 × 378,538,328.60
  4. Step 4: Simplify right side
    412,975,705.40x = 234,490,699,911,783,008
  5. Step 5: Solve for x
    x = 234,490,699,911,783,008/412,975,705.40
  6. Step 6: Final answer
    x = 567,807,492.90

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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.