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Finding the Fourth Proportional to 492,712.78, 679,953.52 and 277,811.26

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Solution

The fourth proportional to 492,712.78, 679,953.52 and 277,811.26 is: 383,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,712.78 : 679,953.52 = 277,811.26 : x
  2. Step 2: Convert to fraction form
    492,712.78/679,953.52 = 277,811.26/x
  3. Step 3: Cross multiply
    492,712.78x = 679,953.52 × 277,811.26
  4. Step 4: Simplify right side
    492,712.78x = 188,898,744,132.64
  5. Step 5: Solve for x
    x = 188,898,744,132.64/492,712.78
  6. Step 6: Final answer
    x = 383,385.11

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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.