Home / 493,123.80-680,530.14-289,146.36

Finding the Fourth Proportional to 493,123.80, 680,530.14 and 289,146.36

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Solution

The fourth proportional to 493,123.80, 680,530.14 and 289,146.36 is: 399,033.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,123.80 : 680,530.14 = 289,146.36 : x
  2. Step 2: Convert to fraction form
    493,123.80/680,530.14 = 289,146.36/x
  3. Step 3: Cross multiply
    493,123.80x = 680,530.14 × 289,146.36
  4. Step 4: Simplify right side
    493,123.80x = 196,772,812,851.29
  5. Step 5: Solve for x
    x = 196,772,812,851.29/493,123.80
  6. Step 6: Final answer
    x = 399,033.29

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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.