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Finding the Fourth Proportional to 579,560.40, 869,729.40 and 342,651.60

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Solution

The fourth proportional to 579,560.40, 869,729.40 and 342,651.60 is: 514,207.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,560.40 : 869,729.40 = 342,651.60 : x
  2. Step 2: Convert to fraction form
    579,560.40/869,729.40 = 342,651.60/x
  3. Step 3: Cross multiply
    579,560.40x = 869,729.40 × 342,651.60
  4. Step 4: Simplify right side
    579,560.40x = 298,014,170,477.04
  5. Step 5: Solve for x
    x = 298,014,170,477.04/579,560.40
  6. Step 6: Final answer
    x = 514,207.27

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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.