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Finding the Fourth Proportional to 579,217.80, 869,604.30 and 369,784.20

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Solution

The fourth proportional to 579,217.80, 869,604.30 and 369,784.20 is: 555,172.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,217.80 : 869,604.30 = 369,784.20 : x
  2. Step 2: Convert to fraction form
    579,217.80/869,604.30 = 369,784.20/x
  3. Step 3: Cross multiply
    579,217.80x = 869,604.30 × 369,784.20
  4. Step 4: Simplify right side
    579,217.80x = 321,565,930,392.06
  5. Step 5: Solve for x
    x = 321,565,930,392.06/579,217.80
  6. Step 6: Final answer
    x = 555,172.74

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.