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Finding the Fourth Proportional to 534,740, 737,941.20 and 319,889.12

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Solution

The fourth proportional to 534,740, 737,941.20 and 319,889.12 is: 441,446.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,740 : 737,941.20 = 319,889.12 : x
  2. Step 2: Convert to fraction form
    534,740/737,941.20 = 319,889.12/x
  3. Step 3: Cross multiply
    534,740x = 737,941.20 × 319,889.12
  4. Step 4: Simplify right side
    534,740x = 236,059,361,079.74
  5. Step 5: Solve for x
    x = 236,059,361,079.74/534,740
  6. Step 6: Final answer
    x = 441,446.99

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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.