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Finding the Fourth Proportional to 587,238.75, 810,390.29 and 318,966.75

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Solution

The fourth proportional to 587,238.75, 810,390.29 and 318,966.75 is: 440,174.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,238.75 : 810,390.29 = 318,966.75 : x
  2. Step 2: Convert to fraction form
    587,238.75/810,390.29 = 318,966.75/x
  3. Step 3: Cross multiply
    587,238.75x = 810,390.29 × 318,966.75
  4. Step 4: Simplify right side
    587,238.75x = 258,487,555,438.02
  5. Step 5: Solve for x
    x = 258,487,555,438.02/587,238.75
  6. Step 6: Final answer
    x = 440,174.55

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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.