Home / 764,562.30-1,055,004.12-420,341.46

Finding the Fourth Proportional to 764,562.30, 1,055,004.12 and 420,341.46

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Solution

The fourth proportional to 764,562.30, 1,055,004.12 and 420,341.46 is: 580,020.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,562.30 : 1,055,004.12 = 420,341.46 : x
  2. Step 2: Convert to fraction form
    764,562.30/1,055,004.12 = 420,341.46/x
  3. Step 3: Cross multiply
    764,562.30x = 1,055,004.12 × 420,341.46
  4. Step 4: Simplify right side
    764,562.30x = 443,461,972,106.82
  5. Step 5: Solve for x
    x = 443,461,972,106.82/764,562.30
  6. Step 6: Final answer
    x = 580,020.72

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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.