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Finding the Fourth Proportional to 878,951.04, 1,212,978.04 and 496,969.62

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Solution

The fourth proportional to 878,951.04, 1,212,978.04 and 496,969.62 is: 685,832.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,951.04 : 1,212,978.04 = 496,969.62 : x
  2. Step 2: Convert to fraction form
    878,951.04/1,212,978.04 = 496,969.62/x
  3. Step 3: Cross multiply
    878,951.04x = 1,212,978.04 × 496,969.62
  4. Step 4: Simplify right side
    878,951.04x = 602,813,235,607.15
  5. Step 5: Solve for x
    x = 602,813,235,607.15/878,951.04
  6. Step 6: Final answer
    x = 685,832.55

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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.