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Finding the Fourth Proportional to 579,775.20, 869,230.80 and 299,493.60

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Solution

The fourth proportional to 579,775.20, 869,230.80 and 299,493.60 is: 449,017.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,775.20 : 869,230.80 = 299,493.60 : x
  2. Step 2: Convert to fraction form
    579,775.20/869,230.80 = 299,493.60/x
  3. Step 3: Cross multiply
    579,775.20x = 869,230.80 × 299,493.60
  4. Step 4: Simplify right side
    579,775.20x = 260,329,061,522.88
  5. Step 5: Solve for x
    x = 260,329,061,522.88/579,775.20
  6. Step 6: Final answer
    x = 449,017.24

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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.