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Finding the Fourth Proportional to 878,875.54, 1,212,880.91 and 496,879.54

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Solution

The fourth proportional to 878,875.54, 1,212,880.91 and 496,879.54 is: 685,712.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,875.54 : 1,212,880.91 = 496,879.54 : x
  2. Step 2: Convert to fraction form
    878,875.54/1,212,880.91 = 496,879.54/x
  3. Step 3: Cross multiply
    878,875.54x = 1,212,880.91 × 496,879.54
  4. Step 4: Simplify right side
    878,875.54x = 602,655,700,086.78
  5. Step 5: Solve for x
    x = 602,655,700,086.78/878,875.54
  6. Step 6: Final answer
    x = 685,712.23

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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.