Home / 427,468,130.38-641,616,828.67-206,295,119.07

Finding the Fourth Proportional to 427,468,130.38, 641,616,828.67 and 206,295,119.07

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Solution

The fourth proportional to 427,468,130.38, 641,616,828.67 and 206,295,119.07 is: 309,642,779.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,468,130.38 : 641,616,828.67 = 206,295,119.07 : x
  2. Step 2: Convert to fraction form
    427,468,130.38/641,616,828.67 = 206,295,119.07/x
  3. Step 3: Cross multiply
    427,468,130.38x = 641,616,828.67 × 206,295,119.07
  4. Step 4: Simplify right side
    427,468,130.38x = 132,362,420,068,091,984
  5. Step 5: Solve for x
    x = 132,362,420,068,091,984/427,468,130.38
  6. Step 6: Final answer
    x = 309,642,779.57

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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.