Home / 1,218,616.72-1,828,008.06-320,056.90

Finding the Fourth Proportional to 1,218,616.72, 1,828,008.06 and 320,056.90

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Solution

The fourth proportional to 1,218,616.72, 1,828,008.06 and 320,056.90 is: 480,107.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,616.72 : 1,828,008.06 = 320,056.90 : x
  2. Step 2: Convert to fraction form
    1,218,616.72/1,828,008.06 = 320,056.90/x
  3. Step 3: Cross multiply
    1,218,616.72x = 1,828,008.06 × 320,056.90
  4. Step 4: Simplify right side
    1,218,616.72x = 585,066,592,858.61
  5. Step 5: Solve for x
    x = 585,066,592,858.61/1,218,616.72
  6. Step 6: Final answer
    x = 480,107.14

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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.