Home / 722,539.20-1,082,642.40-455,822.40

Finding the Fourth Proportional to 722,539.20, 1,082,642.40 and 455,822.40

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Solution

The fourth proportional to 722,539.20, 1,082,642.40 and 455,822.40 is: 682,997.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,539.20 : 1,082,642.40 = 455,822.40 : x
  2. Step 2: Convert to fraction form
    722,539.20/1,082,642.40 = 455,822.40/x
  3. Step 3: Cross multiply
    722,539.20x = 1,082,642.40 × 455,822.40
  4. Step 4: Simplify right side
    722,539.20x = 493,492,657,109.76
  5. Step 5: Solve for x
    x = 493,492,657,109.76/722,539.20
  6. Step 6: Final answer
    x = 682,997.76

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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.