Home / 509,890.16-704,367.96-408,588.56

Finding the Fourth Proportional to 509,890.16, 704,367.96 and 408,588.56

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Solution

The fourth proportional to 509,890.16, 704,367.96 and 408,588.56 is: 564,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,890.16 : 704,367.96 = 408,588.56 : x
  2. Step 2: Convert to fraction form
    509,890.16/704,367.96 = 408,588.56/x
  3. Step 3: Cross multiply
    509,890.16x = 704,367.96 × 408,588.56
  4. Step 4: Simplify right side
    509,890.16x = 287,796,690,486.54
  5. Step 5: Solve for x
    x = 287,796,690,486.54/509,890.16
  6. Step 6: Final answer
    x = 564,428.80

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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.