Home / 764,301.44-1,054,749.10-420,151.87

Finding the Fourth Proportional to 764,301.44, 1,054,749.10 and 420,151.87

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Solution

The fourth proportional to 764,301.44, 1,054,749.10 and 420,151.87 is: 579,816.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,301.44 : 1,054,749.10 = 420,151.87 : x
  2. Step 2: Convert to fraction form
    764,301.44/1,054,749.10 = 420,151.87/x
  3. Step 3: Cross multiply
    764,301.44x = 1,054,749.10 × 420,151.87
  4. Step 4: Simplify right side
    764,301.44x = 443,154,803,058.57
  5. Step 5: Solve for x
    x = 443,154,803,058.57/764,301.44
  6. Step 6: Final answer
    x = 579,816.78

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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.