Home / 1,218,680.40-1,828,020.60-320,062.80

Finding the Fourth Proportional to 1,218,680.40, 1,828,020.60 and 320,062.80

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Solution

The fourth proportional to 1,218,680.40, 1,828,020.60 and 320,062.80 is: 480,094.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,680.40 : 1,828,020.60 = 320,062.80 : x
  2. Step 2: Convert to fraction form
    1,218,680.40/1,828,020.60 = 320,062.80/x
  3. Step 3: Cross multiply
    1,218,680.40x = 1,828,020.60 × 320,062.80
  4. Step 4: Simplify right side
    1,218,680.40x = 585,081,391,693.68
  5. Step 5: Solve for x
    x = 585,081,391,693.68/1,218,680.40
  6. Step 6: Final answer
    x = 480,094.20

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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.