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Finding the Fourth Proportional to 946,422.40, 1,420,022.40 and 347,670.40

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Solution

The fourth proportional to 946,422.40, 1,420,022.40 and 347,670.40 is: 521,648.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    946,422.40 : 1,420,022.40 = 347,670.40 : x
  2. Step 2: Convert to fraction form
    946,422.40/1,420,022.40 = 347,670.40/x
  3. Step 3: Cross multiply
    946,422.40x = 1,420,022.40 × 347,670.40
  4. Step 4: Simplify right side
    946,422.40x = 493,699,755,816.96
  5. Step 5: Solve for x
    x = 493,699,755,816.96/946,422.40
  6. Step 6: Final answer
    x = 521,648.43

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1.5x scale

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.