Home / 878,144.25-1,211,840.28-475,736.25

Finding the Fourth Proportional to 878,144.25, 1,211,840.28 and 475,736.25

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Solution

The fourth proportional to 878,144.25, 1,211,840.28 and 475,736.25 is: 656,516.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,144.25 : 1,211,840.28 = 475,736.25 : x
  2. Step 2: Convert to fraction form
    878,144.25/1,211,840.28 = 475,736.25/x
  3. Step 3: Cross multiply
    878,144.25x = 1,211,840.28 × 475,736.25
  4. Step 4: Simplify right side
    878,144.25x = 576,516,350,406.15
  5. Step 5: Solve for x
    x = 576,516,350,406.15/878,144.25
  6. Step 6: Final answer
    x = 656,516.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.