Home / 928,009.58-1,280,759.46-520,221.56

Finding the Fourth Proportional to 928,009.58, 1,280,759.46 and 520,221.56

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Solution

The fourth proportional to 928,009.58, 1,280,759.46 and 520,221.56 is: 717,965.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,009.58 : 1,280,759.46 = 520,221.56 : x
  2. Step 2: Convert to fraction form
    928,009.58/1,280,759.46 = 520,221.56/x
  3. Step 3: Cross multiply
    928,009.58x = 1,280,759.46 × 520,221.56
  4. Step 4: Simplify right side
    928,009.58x = 666,278,684,265.96
  5. Step 5: Solve for x
    x = 666,278,684,265.96/928,009.58
  6. Step 6: Final answer
    x = 717,965.31

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Double scale
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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.