Home / 764,756.13-1,055,341.15-420,591.69

Finding the Fourth Proportional to 764,756.13, 1,055,341.15 and 420,591.69

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Solution

The fourth proportional to 764,756.13, 1,055,341.15 and 420,591.69 is: 580,404.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,756.13 : 1,055,341.15 = 420,591.69 : x
  2. Step 2: Convert to fraction form
    764,756.13/1,055,341.15 = 420,591.69/x
  3. Step 3: Cross multiply
    764,756.13x = 1,055,341.15 × 420,591.69
  4. Step 4: Simplify right side
    764,756.13x = 443,867,717,805.04
  5. Step 5: Solve for x
    x = 443,867,717,805.04/764,756.13
  6. Step 6: Final answer
    x = 580,404.26

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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.