Home / 1,231,402.40-1,846,930.80-390,039.20

Finding the Fourth Proportional to 1,231,402.40, 1,846,930.80 and 390,039.20

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Solution

The fourth proportional to 1,231,402.40, 1,846,930.80 and 390,039.20 is: 585,004.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,402.40 : 1,846,930.80 = 390,039.20 : x
  2. Step 2: Convert to fraction form
    1,231,402.40/1,846,930.80 = 390,039.20/x
  3. Step 3: Cross multiply
    1,231,402.40x = 1,846,930.80 × 390,039.20
  4. Step 4: Simplify right side
    1,231,402.40x = 720,375,411,687.36
  5. Step 5: Solve for x
    x = 720,375,411,687.36/1,231,402.40
  6. Step 6: Final answer
    x = 585,004.07

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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.