Home / 497,829.75-687,056.90-306,838.23

Finding the Fourth Proportional to 497,829.75, 687,056.90 and 306,838.23

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Solution

The fourth proportional to 497,829.75, 687,056.90 and 306,838.23 is: 423,468.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,829.75 : 687,056.90 = 306,838.23 : x
  2. Step 2: Convert to fraction form
    497,829.75/687,056.90 = 306,838.23/x
  3. Step 3: Cross multiply
    497,829.75x = 687,056.90 × 306,838.23
  4. Step 4: Simplify right side
    497,829.75x = 210,815,321,571.10
  5. Step 5: Solve for x
    x = 210,815,321,571.10/497,829.75
  6. Step 6: Final answer
    x = 423,468.71

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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.