Home / 718,867.96-1,078,117.32-213,309.36

Finding the Fourth Proportional to 718,867.96, 1,078,117.32 and 213,309.36

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Solution

The fourth proportional to 718,867.96, 1,078,117.32 and 213,309.36 is: 319,909.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,867.96 : 1,078,117.32 = 213,309.36 : x
  2. Step 2: Convert to fraction form
    718,867.96/1,078,117.32 = 213,309.36/x
  3. Step 3: Cross multiply
    718,867.96x = 1,078,117.32 × 213,309.36
  4. Step 4: Simplify right side
    718,867.96x = 229,972,515,534.12
  5. Step 5: Solve for x
    x = 229,972,515,534.12/718,867.96
  6. Step 6: Final answer
    x = 319,909.26

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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.