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Finding the Fourth Proportional to 692,012.22, 955,043.64 and 420,017.46

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Solution

The fourth proportional to 692,012.22, 955,043.64 and 420,017.46 is: 579,664.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,012.22 : 955,043.64 = 420,017.46 : x
  2. Step 2: Convert to fraction form
    692,012.22/955,043.64 = 420,017.46/x
  3. Step 3: Cross multiply
    692,012.22x = 955,043.64 × 420,017.46
  4. Step 4: Simplify right side
    692,012.22x = 401,135,003,861.95
  5. Step 5: Solve for x
    x = 401,135,003,861.95/692,012.22
  6. Step 6: Final answer
    x = 579,664.62

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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.