Home / 770,688.80-1,155,975.60-321,293.60

Finding the Fourth Proportional to 770,688.80, 1,155,975.60 and 321,293.60

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Solution

The fourth proportional to 770,688.80, 1,155,975.60 and 321,293.60 is: 481,916.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,688.80 : 1,155,975.60 = 321,293.60 : x
  2. Step 2: Convert to fraction form
    770,688.80/1,155,975.60 = 321,293.60/x
  3. Step 3: Cross multiply
    770,688.80x = 1,155,975.60 × 321,293.60
  4. Step 4: Simplify right side
    770,688.80x = 371,407,562,036.16
  5. Step 5: Solve for x
    x = 371,407,562,036.16/770,688.80
  6. Step 6: Final answer
    x = 481,916.39

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1.5x scale

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.