Home / 771,752.20-1,157,628.30-728,449.60

Finding the Fourth Proportional to 771,752.20, 1,157,628.30 and 728,449.60

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Solution

The fourth proportional to 771,752.20, 1,157,628.30 and 728,449.60 is: 1,092,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,752.20 : 1,157,628.30 = 728,449.60 : x
  2. Step 2: Convert to fraction form
    771,752.20/1,157,628.30 = 728,449.60/x
  3. Step 3: Cross multiply
    771,752.20x = 1,157,628.30 × 728,449.60
  4. Step 4: Simplify right side
    771,752.20x = 843,273,872,083.68
  5. Step 5: Solve for x
    x = 843,273,872,083.68/771,752.20
  6. Step 6: Final answer
    x = 1,092,674.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.