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Finding the Fourth Proportional to 523,373.90, 783,116.85 and 383,405.90

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Solution

The fourth proportional to 523,373.90, 783,116.85 and 383,405.90 is: 573,684.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,373.90 : 783,116.85 = 383,405.90 : x
  2. Step 2: Convert to fraction form
    523,373.90/783,116.85 = 383,405.90/x
  3. Step 3: Cross multiply
    523,373.90x = 783,116.85 × 383,405.90
  4. Step 4: Simplify right side
    523,373.90x = 300,251,620,679.42
  5. Step 5: Solve for x
    x = 300,251,620,679.42/523,373.90
  6. Step 6: Final answer
    x = 573,684.74

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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.