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Finding the Fourth Proportional to 579,586.40, 869,768.40 and 342,677.60

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Solution

The fourth proportional to 579,586.40, 869,768.40 and 342,677.60 is: 514,246.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,586.40 : 869,768.40 = 342,677.60 : x
  2. Step 2: Convert to fraction form
    579,586.40/869,768.40 = 342,677.60/x
  3. Step 3: Cross multiply
    579,586.40x = 869,768.40 × 342,677.60
  4. Step 4: Simplify right side
    579,586.40x = 298,050,147,867.84
  5. Step 5: Solve for x
    x = 298,050,147,867.84/579,586.40
  6. Step 6: Final answer
    x = 514,246.28

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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.