Home / 790,875.36-1,091,409-428,299.80

Finding the Fourth Proportional to 790,875.36, 1,091,409 and 428,299.80

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Solution

The fourth proportional to 790,875.36, 1,091,409 and 428,299.80 is: 591,054.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,875.36 : 1,091,409 = 428,299.80 : x
  2. Step 2: Convert to fraction form
    790,875.36/1,091,409 = 428,299.80/x
  3. Step 3: Cross multiply
    790,875.36x = 1,091,409 × 428,299.80
  4. Step 4: Simplify right side
    790,875.36x = 467,450,256,418.20
  5. Step 5: Solve for x
    x = 467,450,256,418.20/790,875.36
  6. Step 6: Final answer
    x = 591,054.27

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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.