Home / 1,680,090.72-2,520,145.20-417,918.36

Finding the Fourth Proportional to 1,680,090.72, 2,520,145.20 and 417,918.36

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Solution

The fourth proportional to 1,680,090.72, 2,520,145.20 and 417,918.36 is: 626,879.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680,090.72 : 2,520,145.20 = 417,918.36 : x
  2. Step 2: Convert to fraction form
    1,680,090.72/2,520,145.20 = 417,918.36/x
  3. Step 3: Cross multiply
    1,680,090.72x = 2,520,145.20 × 417,918.36
  4. Step 4: Simplify right side
    1,680,090.72x = 1,053,214,948,945.87
  5. Step 5: Solve for x
    x = 1,053,214,948,945.87/1,680,090.72
  6. Step 6: Final answer
    x = 626,879.81

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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.