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Finding the Fourth Proportional to 878,168.48, 1,211,878.32 and 475,760.48

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Solution

The fourth proportional to 878,168.48, 1,211,878.32 and 475,760.48 is: 656,552.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,168.48 : 1,211,878.32 = 475,760.48 : x
  2. Step 2: Convert to fraction form
    878,168.48/1,211,878.32 = 475,760.48/x
  3. Step 3: Cross multiply
    878,168.48x = 1,211,878.32 × 475,760.48
  4. Step 4: Simplify right side
    878,168.48x = 576,563,811,224.79
  5. Step 5: Solve for x
    x = 576,563,811,224.79/878,168.48
  6. Step 6: Final answer
    x = 656,552.61

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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.