Home / 740,667.21-1,022,141.75-418,390.89

Finding the Fourth Proportional to 740,667.21, 1,022,141.75 and 418,390.89

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Solution

The fourth proportional to 740,667.21, 1,022,141.75 and 418,390.89 is: 577,391.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,667.21 : 1,022,141.75 = 418,390.89 : x
  2. Step 2: Convert to fraction form
    740,667.21/1,022,141.75 = 418,390.89/x
  3. Step 3: Cross multiply
    740,667.21x = 1,022,141.75 × 418,390.89
  4. Step 4: Simplify right side
    740,667.21x = 427,654,794,396.70
  5. Step 5: Solve for x
    x = 427,654,794,396.70/740,667.21
  6. Step 6: Final answer
    x = 577,391.29

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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.