Home / 515,077.07-772,837.61-278,586.23

Finding the Fourth Proportional to 515,077.07, 772,837.61 and 278,586.23

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Solution

The fourth proportional to 515,077.07, 772,837.61 and 278,586.23 is: 417,999.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,077.07 : 772,837.61 = 278,586.23 : x
  2. Step 2: Convert to fraction form
    515,077.07/772,837.61 = 278,586.23/x
  3. Step 3: Cross multiply
    515,077.07x = 772,837.61 × 278,586.23
  4. Step 4: Simplify right side
    515,077.07x = 215,301,914,779.18
  5. Step 5: Solve for x
    x = 215,301,914,779.18/515,077.07
  6. Step 6: Final answer
    x = 417,999.42

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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.