Home / 764,461.72-1,054,959.28-420,332.83

Finding the Fourth Proportional to 764,461.72, 1,054,959.28 and 420,332.83

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Solution

The fourth proportional to 764,461.72, 1,054,959.28 and 420,332.83 is: 580,060.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,461.72 : 1,054,959.28 = 420,332.83 : x
  2. Step 2: Convert to fraction form
    764,461.72/1,054,959.28 = 420,332.83/x
  3. Step 3: Cross multiply
    764,461.72x = 1,054,959.28 × 420,332.83
  4. Step 4: Simplify right side
    764,461.72x = 443,434,016,008.93
  5. Step 5: Solve for x
    x = 443,434,016,008.93/764,461.72
  6. Step 6: Final answer
    x = 580,060.46

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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.