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Finding the Fourth Proportional to 534,422.66, 737,503.98 and 289,407.84

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Solution

The fourth proportional to 534,422.66, 737,503.98 and 289,407.84 is: 399,383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,422.66 : 737,503.98 = 289,407.84 : x
  2. Step 2: Convert to fraction form
    534,422.66/737,503.98 = 289,407.84/x
  3. Step 3: Cross multiply
    534,422.66x = 737,503.98 × 289,407.84
  4. Step 4: Simplify right side
    534,422.66x = 213,439,433,843.20
  5. Step 5: Solve for x
    x = 213,439,433,843.20/534,422.66
  6. Step 6: Final answer
    x = 399,383.20

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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.