Home / 804,820.40-1,207,230.60-521,385.20

Finding the Fourth Proportional to 804,820.40, 1,207,230.60 and 521,385.20

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Solution

The fourth proportional to 804,820.40, 1,207,230.60 and 521,385.20 is: 782,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,820.40 : 1,207,230.60 = 521,385.20 : x
  2. Step 2: Convert to fraction form
    804,820.40/1,207,230.60 = 521,385.20/x
  3. Step 3: Cross multiply
    804,820.40x = 1,207,230.60 × 521,385.20
  4. Step 4: Simplify right side
    804,820.40x = 629,432,167,827.12
  5. Step 5: Solve for x
    x = 629,432,167,827.12/804,820.40
  6. Step 6: Final answer
    x = 782,077.80

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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.