Home / 764,756.88-1,055,342.17-420,592.45

Finding the Fourth Proportional to 764,756.88, 1,055,342.17 and 420,592.45

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Solution

The fourth proportional to 764,756.88, 1,055,342.17 and 420,592.45 is: 580,405.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,756.88 : 1,055,342.17 = 420,592.45 : x
  2. Step 2: Convert to fraction form
    764,756.88/1,055,342.17 = 420,592.45/x
  3. Step 3: Cross multiply
    764,756.88x = 1,055,342.17 × 420,592.45
  4. Step 4: Simplify right side
    764,756.88x = 443,868,948,868.62
  5. Step 5: Solve for x
    x = 443,868,948,868.62/764,756.88
  6. Step 6: Final answer
    x = 580,405.30

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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.