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Finding the Fourth Proportional to 498,571.44, 688,358.52 and 307,865.04

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Solution

The fourth proportional to 498,571.44, 688,358.52 and 307,865.04 is: 425,057.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,571.44 : 688,358.52 = 307,865.04 : x
  2. Step 2: Convert to fraction form
    498,571.44/688,358.52 = 307,865.04/x
  3. Step 3: Cross multiply
    498,571.44x = 688,358.52 × 307,865.04
  4. Step 4: Simplify right side
    498,571.44x = 211,921,523,294.14
  5. Step 5: Solve for x
    x = 211,921,523,294.14/498,571.44
  6. Step 6: Final answer
    x = 425,057.49

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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.