Home / 785,420.55-1,178,198.37-216,801.72

Finding the Fourth Proportional to 785,420.55, 1,178,198.37 and 216,801.72

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Solution

The fourth proportional to 785,420.55, 1,178,198.37 and 216,801.72 is: 325,221.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,420.55 : 1,178,198.37 = 216,801.72 : x
  2. Step 2: Convert to fraction form
    785,420.55/1,178,198.37 = 216,801.72/x
  3. Step 3: Cross multiply
    785,420.55x = 1,178,198.37 × 216,801.72
  4. Step 4: Simplify right side
    785,420.55x = 255,435,433,117.20
  5. Step 5: Solve for x
    x = 255,435,433,117.20/785,420.55
  6. Step 6: Final answer
    x = 325,221.22

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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.