Home / 823,335.20-1,235,780.40-508,407.20

Finding the Fourth Proportional to 823,335.20, 1,235,780.40 and 508,407.20

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Solution

The fourth proportional to 823,335.20, 1,235,780.40 and 508,407.20 is: 763,090.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,335.20 : 1,235,780.40 = 508,407.20 : x
  2. Step 2: Convert to fraction form
    823,335.20/1,235,780.40 = 508,407.20/x
  3. Step 3: Cross multiply
    823,335.20x = 1,235,780.40 × 508,407.20
  4. Step 4: Simplify right side
    823,335.20x = 628,279,652,978.88
  5. Step 5: Solve for x
    x = 628,279,652,978.88/823,335.20
  6. Step 6: Final answer
    x = 763,090.97

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1.5x scale

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.