Home / 728,720.48-1,085,836.24-649,223.84

Finding the Fourth Proportional to 728,720.48, 1,085,836.24 and 649,223.84

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Solution

The fourth proportional to 728,720.48, 1,085,836.24 and 649,223.84 is: 967,381.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,720.48 : 1,085,836.24 = 649,223.84 : x
  2. Step 2: Convert to fraction form
    728,720.48/1,085,836.24 = 649,223.84/x
  3. Step 3: Cross multiply
    728,720.48x = 1,085,836.24 × 649,223.84
  4. Step 4: Simplify right side
    728,720.48x = 704,950,773,343.96
  5. Step 5: Solve for x
    x = 704,950,773,343.96/728,720.48
  6. Step 6: Final answer
    x = 967,381.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.