Home / 780,312.10-1,170,468.12-219,346.60

Finding the Fourth Proportional to 780,312.10, 1,170,468.12 and 219,346.60

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Solution

The fourth proportional to 780,312.10, 1,170,468.12 and 219,346.60 is: 329,019.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,312.10 : 1,170,468.12 = 219,346.60 : x
  2. Step 2: Convert to fraction form
    780,312.10/1,170,468.12 = 219,346.60/x
  3. Step 3: Cross multiply
    780,312.10x = 1,170,468.12 × 219,346.60
  4. Step 4: Simplify right side
    780,312.10x = 256,738,202,530.39
  5. Step 5: Solve for x
    x = 256,738,202,530.39/780,312.10
  6. Step 6: Final answer
    x = 329,019.89

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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.