Home / 785,431.89-1,178,215.38-216,813.06

Finding the Fourth Proportional to 785,431.89, 1,178,215.38 and 216,813.06

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Solution

The fourth proportional to 785,431.89, 1,178,215.38 and 216,813.06 is: 325,238.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,431.89 : 1,178,215.38 = 216,813.06 : x
  2. Step 2: Convert to fraction form
    785,431.89/1,178,215.38 = 216,813.06/x
  3. Step 3: Cross multiply
    785,431.89x = 1,178,215.38 × 216,813.06
  4. Step 4: Simplify right side
    785,431.89x = 255,452,481,876.86
  5. Step 5: Solve for x
    x = 255,452,481,876.86/785,431.89
  6. Step 6: Final answer
    x = 325,238.24

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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.