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Finding the Fourth Proportional to 692,023.72, 955,059.54 and 420,028.96

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Solution

The fourth proportional to 692,023.72, 955,059.54 and 420,028.96 is: 579,680.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,023.72 : 955,059.54 = 420,028.96 : x
  2. Step 2: Convert to fraction form
    692,023.72/955,059.54 = 420,028.96/x
  3. Step 3: Cross multiply
    692,023.72x = 955,059.54 × 420,028.96
  4. Step 4: Simplify right side
    692,023.72x = 401,152,665,324.28
  5. Step 5: Solve for x
    x = 401,152,665,324.28/692,023.72
  6. Step 6: Final answer
    x = 579,680.51

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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.