Home / 1,689,964.20-2,534,948.16-427,791.72

Finding the Fourth Proportional to 1,689,964.20, 2,534,948.16 and 427,791.72

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Solution

The fourth proportional to 1,689,964.20, 2,534,948.16 and 427,791.72 is: 641,688.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,964.20 : 2,534,948.16 = 427,791.72 : x
  2. Step 2: Convert to fraction form
    1,689,964.20/2,534,948.16 = 427,791.72/x
  3. Step 3: Cross multiply
    1,689,964.20x = 2,534,948.16 × 427,791.72
  4. Step 4: Simplify right side
    1,689,964.20x = 1,084,429,833,477.24
  5. Step 5: Solve for x
    x = 1,084,429,833,477.24/1,689,964.20
  6. Step 6: Final answer
    x = 641,688.05

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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.