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Finding the Fourth Proportional to 492,699.42, 679,948.52 and 277,834.86

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Solution

The fourth proportional to 492,699.42, 679,948.52 and 277,834.86 is: 383,425.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,699.42 : 679,948.52 = 277,834.86 : x
  2. Step 2: Convert to fraction form
    492,699.42/679,948.52 = 277,834.86/x
  3. Step 3: Cross multiply
    492,699.42x = 679,948.52 × 277,834.86
  4. Step 4: Simplify right side
    492,699.42x = 188,913,400,472.23
  5. Step 5: Solve for x
    x = 188,913,400,472.23/492,699.42
  6. Step 6: Final answer
    x = 383,425.25

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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.