Home / 525,779.65-787,919.41-405,381.25

Finding the Fourth Proportional to 525,779.65, 787,919.41 and 405,381.25

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Solution

The fourth proportional to 525,779.65, 787,919.41 and 405,381.25 is: 607,493.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,779.65 : 787,919.41 = 405,381.25 : x
  2. Step 2: Convert to fraction form
    525,779.65/787,919.41 = 405,381.25/x
  3. Step 3: Cross multiply
    525,779.65x = 787,919.41 × 405,381.25
  4. Step 4: Simplify right side
    525,779.65x = 319,407,749,358.56
  5. Step 5: Solve for x
    x = 319,407,749,358.56/525,779.65
  6. Step 6: Final answer
    x = 607,493.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.