Home / 1,153,418.20-1,728,053.70-987,530.20

Finding the Fourth Proportional to 1,153,418.20, 1,728,053.70 and 987,530.20

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Solution

The fourth proportional to 1,153,418.20, 1,728,053.70 and 987,530.20 is: 1,479,519.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153,418.20 : 1,728,053.70 = 987,530.20 : x
  2. Step 2: Convert to fraction form
    1,153,418.20/1,728,053.70 = 987,530.20/x
  3. Step 3: Cross multiply
    1,153,418.20x = 1,728,053.70 × 987,530.20
  4. Step 4: Simplify right side
    1,153,418.20x = 1,706,505,215,971.74
  5. Step 5: Solve for x
    x = 1,706,505,215,971.74/1,153,418.20
  6. Step 6: Final answer
    x = 1,479,519.93

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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.