Home / 1,153,389.20-1,728,010.20-987,501.20

Finding the Fourth Proportional to 1,153,389.20, 1,728,010.20 and 987,501.20

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Solution

The fourth proportional to 1,153,389.20, 1,728,010.20 and 987,501.20 is: 1,479,476.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153,389.20 : 1,728,010.20 = 987,501.20 : x
  2. Step 2: Convert to fraction form
    1,153,389.20/1,728,010.20 = 987,501.20/x
  3. Step 3: Cross multiply
    1,153,389.20x = 1,728,010.20 × 987,501.20
  4. Step 4: Simplify right side
    1,153,389.20x = 1,706,412,146,112.24
  5. Step 5: Solve for x
    x = 1,706,412,146,112.24/1,153,389.20
  6. Step 6: Final answer
    x = 1,479,476.44

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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.