Home / 1,214,730.48-1,821,908.70-405,129

Finding the Fourth Proportional to 1,214,730.48, 1,821,908.70 and 405,129

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Solution

The fourth proportional to 1,214,730.48, 1,821,908.70 and 405,129 is: 607,631.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,730.48 : 1,821,908.70 = 405,129 : x
  2. Step 2: Convert to fraction form
    1,214,730.48/1,821,908.70 = 405,129/x
  3. Step 3: Cross multiply
    1,214,730.48x = 1,821,908.70 × 405,129
  4. Step 4: Simplify right side
    1,214,730.48x = 738,108,049,722.30
  5. Step 5: Solve for x
    x = 738,108,049,722.30/1,214,730.48
  6. Step 6: Final answer
    x = 607,631.13

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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.