Home / 764,538.24-1,054,970.88-420,317.52

Finding the Fourth Proportional to 764,538.24, 1,054,970.88 and 420,317.52

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Solution

The fourth proportional to 764,538.24, 1,054,970.88 and 420,317.52 is: 579,987.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,538.24 : 1,054,970.88 = 420,317.52 : x
  2. Step 2: Convert to fraction form
    764,538.24/1,054,970.88 = 420,317.52/x
  3. Step 3: Cross multiply
    764,538.24x = 1,054,970.88 × 420,317.52
  4. Step 4: Simplify right side
    764,538.24x = 443,422,743,953.82
  5. Step 5: Solve for x
    x = 443,422,743,953.82/764,538.24
  6. Step 6: Final answer
    x = 579,987.66

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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.