Home / 928,004.58-1,280,752.56-520,216.56

Finding the Fourth Proportional to 928,004.58, 1,280,752.56 and 520,216.56

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Solution

The fourth proportional to 928,004.58, 1,280,752.56 and 520,216.56 is: 717,958.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,004.58 : 1,280,752.56 = 520,216.56 : x
  2. Step 2: Convert to fraction form
    928,004.58/1,280,752.56 = 520,216.56/x
  3. Step 3: Cross multiply
    928,004.58x = 1,280,752.56 × 520,216.56
  4. Step 4: Simplify right side
    928,004.58x = 666,268,690,974.39
  5. Step 5: Solve for x
    x = 666,268,690,974.39/928,004.58
  6. Step 6: Final answer
    x = 717,958.41

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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.