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Finding the Fourth Proportional to 865,538.26, 1,194,420.78 and 483,567.90

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Solution

The fourth proportional to 865,538.26, 1,194,420.78 and 483,567.90 is: 667,311.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,538.26 : 1,194,420.78 = 483,567.90 : x
  2. Step 2: Convert to fraction form
    865,538.26/1,194,420.78 = 483,567.90/x
  3. Step 3: Cross multiply
    865,538.26x = 1,194,420.78 × 483,567.90
  4. Step 4: Simplify right side
    865,538.26x = 577,583,548,300.96
  5. Step 5: Solve for x
    x = 577,583,548,300.96/865,538.26
  6. Step 6: Final answer
    x = 667,311.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.