Home / 718,085.26-990,945.36-395,825.34

Finding the Fourth Proportional to 718,085.26, 990,945.36 and 395,825.34

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Solution

The fourth proportional to 718,085.26, 990,945.36 and 395,825.34 is: 546,232.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,085.26 : 990,945.36 = 395,825.34 : x
  2. Step 2: Convert to fraction form
    718,085.26/990,945.36 = 395,825.34/x
  3. Step 3: Cross multiply
    718,085.26x = 990,945.36 × 395,825.34
  4. Step 4: Simplify right side
    718,085.26x = 392,241,284,043.42
  5. Step 5: Solve for x
    x = 392,241,284,043.42/718,085.26
  6. Step 6: Final answer
    x = 546,232.19

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1.5x scale

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.