Home / 770,686.80-1,155,972.60-321,291.60

Finding the Fourth Proportional to 770,686.80, 1,155,972.60 and 321,291.60

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Solution

The fourth proportional to 770,686.80, 1,155,972.60 and 321,291.60 is: 481,913.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,686.80 : 1,155,972.60 = 321,291.60 : x
  2. Step 2: Convert to fraction form
    770,686.80/1,155,972.60 = 321,291.60/x
  3. Step 3: Cross multiply
    770,686.80x = 1,155,972.60 × 321,291.60
  4. Step 4: Simplify right side
    770,686.80x = 371,404,286,210.16
  5. Step 5: Solve for x
    x = 371,404,286,210.16/770,686.80
  6. Step 6: Final answer
    x = 481,913.39

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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.