Home / 780,395.34-1,170,593.47-219,429.84

Finding the Fourth Proportional to 780,395.34, 1,170,593.47 and 219,429.84

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Solution

The fourth proportional to 780,395.34, 1,170,593.47 and 219,429.84 is: 329,144.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,395.34 : 1,170,593.47 = 219,429.84 : x
  2. Step 2: Convert to fraction form
    780,395.34/1,170,593.47 = 219,429.84/x
  3. Step 3: Cross multiply
    780,395.34x = 1,170,593.47 × 219,429.84
  4. Step 4: Simplify right side
    780,395.34x = 256,863,142,491.16
  5. Step 5: Solve for x
    x = 256,863,142,491.16/780,395.34
  6. Step 6: Final answer
    x = 329,144.89

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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.