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Finding the Fourth Proportional to 534,419.12, 737,499.10 and 289,404.30

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Solution

The fourth proportional to 534,419.12, 737,499.10 and 289,404.30 is: 399,378.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,419.12 : 737,499.10 = 289,404.30 : x
  2. Step 2: Convert to fraction form
    534,419.12/737,499.10 = 289,404.30/x
  3. Step 3: Cross multiply
    534,419.12x = 737,499.10 × 289,404.30
  4. Step 4: Simplify right side
    534,419.12x = 213,435,411,147.89
  5. Step 5: Solve for x
    x = 213,435,411,147.89/534,419.12
  6. Step 6: Final answer
    x = 399,378.32

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1.5x scale

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.