Home / 493,102.80-680,501.16-289,125.36

Finding the Fourth Proportional to 493,102.80, 680,501.16 and 289,125.36

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Solution

The fourth proportional to 493,102.80, 680,501.16 and 289,125.36 is: 399,004.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,102.80 : 680,501.16 = 289,125.36 : x
  2. Step 2: Convert to fraction form
    493,102.80/680,501.16 = 289,125.36/x
  3. Step 3: Cross multiply
    493,102.80x = 680,501.16 × 289,125.36
  4. Step 4: Simplify right side
    493,102.80x = 196,750,142,865.42
  5. Step 5: Solve for x
    x = 196,750,142,865.42/493,102.80
  6. Step 6: Final answer
    x = 399,004.31

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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.