Home / 718,270.74-991,195.38-395,973.36

Finding the Fourth Proportional to 718,270.74, 991,195.38 and 395,973.36

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Solution

The fourth proportional to 718,270.74, 991,195.38 and 395,973.36 is: 546,433.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,270.74 : 991,195.38 = 395,973.36 : x
  2. Step 2: Convert to fraction form
    718,270.74/991,195.38 = 395,973.36/x
  3. Step 3: Cross multiply
    718,270.74x = 991,195.38 × 395,973.36
  4. Step 4: Simplify right side
    718,270.74x = 392,486,965,035.08
  5. Step 5: Solve for x
    x = 392,486,965,035.08/718,270.74
  6. Step 6: Final answer
    x = 546,433.18

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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.