Home / 764,479.53-1,055,002.01-420,329.84

Finding the Fourth Proportional to 764,479.53, 1,055,002.01 and 420,329.84

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Solution

The fourth proportional to 764,479.53, 1,055,002.01 and 420,329.84 is: 580,066.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,479.53 : 1,055,002.01 = 420,329.84 : x
  2. Step 2: Convert to fraction form
    764,479.53/1,055,002.01 = 420,329.84/x
  3. Step 3: Cross multiply
    764,479.53x = 1,055,002.01 × 420,329.84
  4. Step 4: Simplify right side
    764,479.53x = 443,448,818,686.32
  5. Step 5: Solve for x
    x = 443,448,818,686.32/764,479.53
  6. Step 6: Final answer
    x = 580,066.31

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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.