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Finding the Fourth Proportional to 496,595.03, 685,253.70 and 278,753.79

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Solution

The fourth proportional to 496,595.03, 685,253.70 and 278,753.79 is: 384,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,595.03 : 685,253.70 = 278,753.79 : x
  2. Step 2: Convert to fraction form
    496,595.03/685,253.70 = 278,753.79/x
  3. Step 3: Cross multiply
    496,595.03x = 685,253.70 × 278,753.79
  4. Step 4: Simplify right side
    496,595.03x = 191,017,065,986.52
  5. Step 5: Solve for x
    x = 191,017,065,986.52/496,595.03
  6. Step 6: Final answer
    x = 384,653.60

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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.