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Finding the Fourth Proportional to 878,989.68, 1,212,957.72 and 497,093.04

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Solution

The fourth proportional to 878,989.68, 1,212,957.72 and 497,093.04 is: 685,961.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,989.68 : 1,212,957.72 = 497,093.04 : x
  2. Step 2: Convert to fraction form
    878,989.68/1,212,957.72 = 497,093.04/x
  3. Step 3: Cross multiply
    878,989.68x = 1,212,957.72 × 497,093.04
  4. Step 4: Simplify right side
    878,989.68x = 602,952,840,426.27
  5. Step 5: Solve for x
    x = 602,952,840,426.27/878,989.68
  6. Step 6: Final answer
    x = 685,961.23

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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.