Home / 505,491,638.40-758,237,457.60-287,057,577.60

Finding the Fourth Proportional to 505,491,638.40, 758,237,457.60 and 287,057,577.60

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Solution

The fourth proportional to 505,491,638.40, 758,237,457.60 and 287,057,577.60 is: 430,586,366.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,491,638.40 : 758,237,457.60 = 287,057,577.60 : x
  2. Step 2: Convert to fraction form
    505,491,638.40/758,237,457.60 = 287,057,577.60/x
  3. Step 3: Cross multiply
    505,491,638.40x = 758,237,457.60 × 287,057,577.60
  4. Step 4: Simplify right side
    505,491,638.40x = 217,657,807,824,238,720
  5. Step 5: Solve for x
    x = 217,657,807,824,238,720/505,491,638.40
  6. Step 6: Final answer
    x = 430,586,366.40

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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.