Home / 764,444.51-1,054,934.11-420,286.31

Finding the Fourth Proportional to 764,444.51, 1,054,934.11 and 420,286.31

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Solution

The fourth proportional to 764,444.51, 1,054,934.11 and 420,286.31 is: 579,995.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,444.51 : 1,054,934.11 = 420,286.31 : x
  2. Step 2: Convert to fraction form
    764,444.51/1,054,934.11 = 420,286.31/x
  3. Step 3: Cross multiply
    764,444.51x = 1,054,934.11 × 420,286.31
  4. Step 4: Simplify right side
    764,444.51x = 443,374,364,385.03
  5. Step 5: Solve for x
    x = 443,374,364,385.03/764,444.51
  6. Step 6: Final answer
    x = 579,995.49

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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.