Home / 809,090,638.70-1,214,202,828.45-518,664,037.10

Finding the Fourth Proportional to 809,090,638.70, 1,214,202,828.45 and 518,664,037.10

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Solution

The fourth proportional to 809,090,638.70, 1,214,202,828.45 and 518,664,037.10 is: 778,359,445.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,090,638.70 : 1,214,202,828.45 = 518,664,037.10 : x
  2. Step 2: Convert to fraction form
    809,090,638.70/1,214,202,828.45 = 518,664,037.10/x
  3. Step 3: Cross multiply
    809,090,638.70x = 1,214,202,828.45 × 518,664,037.10
  4. Step 4: Simplify right side
    809,090,638.70x = 629,763,340,862,115,840
  5. Step 5: Solve for x
    x = 629,763,340,862,115,840/809,090,638.70
  6. Step 6: Final answer
    x = 778,359,445.46

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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.