Home / 821,231.64-1,132,982.52-515,182.86

Finding the Fourth Proportional to 821,231.64, 1,132,982.52 and 515,182.86

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Solution

The fourth proportional to 821,231.64, 1,132,982.52 and 515,182.86 is: 710,753.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,231.64 : 1,132,982.52 = 515,182.86 : x
  2. Step 2: Convert to fraction form
    821,231.64/1,132,982.52 = 515,182.86/x
  3. Step 3: Cross multiply
    821,231.64x = 1,132,982.52 × 515,182.86
  4. Step 4: Simplify right side
    821,231.64x = 583,693,174,983.61
  5. Step 5: Solve for x
    x = 583,693,174,983.61/821,231.64
  6. Step 6: Final answer
    x = 710,753.39

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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.