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Finding the Fourth Proportional to 692,555.55, 955,564.34 and 420,615.87

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Solution

The fourth proportional to 692,555.55, 955,564.34 and 420,615.87 is: 580,351.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,555.55 : 955,564.34 = 420,615.87 : x
  2. Step 2: Convert to fraction form
    692,555.55/955,564.34 = 420,615.87/x
  3. Step 3: Cross multiply
    692,555.55x = 955,564.34 × 420,615.87
  4. Step 4: Simplify right side
    692,555.55x = 401,925,524,107.00
  5. Step 5: Solve for x
    x = 401,925,524,107.00/692,555.55
  6. Step 6: Final answer
    x = 580,351.31

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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.