Home / 764,484.30-1,054,896.66-420,263.46

Finding the Fourth Proportional to 764,484.30, 1,054,896.66 and 420,263.46

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Solution

The fourth proportional to 764,484.30, 1,054,896.66 and 420,263.46 is: 579,913.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,484.30 : 1,054,896.66 = 420,263.46 : x
  2. Step 2: Convert to fraction form
    764,484.30/1,054,896.66 = 420,263.46/x
  3. Step 3: Cross multiply
    764,484.30x = 1,054,896.66 × 420,263.46
  4. Step 4: Simplify right side
    764,484.30x = 443,334,520,274.04
  5. Step 5: Solve for x
    x = 443,334,520,274.04/764,484.30
  6. Step 6: Final answer
    x = 579,913.18

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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.