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Finding the Fourth Proportional to 591,313.80, 887,408.10 and 391,567.80

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Solution

The fourth proportional to 591,313.80, 887,408.10 and 391,567.80 is: 587,641.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,313.80 : 887,408.10 = 391,567.80 : x
  2. Step 2: Convert to fraction form
    591,313.80/887,408.10 = 391,567.80/x
  3. Step 3: Cross multiply
    591,313.80x = 887,408.10 × 391,567.80
  4. Step 4: Simplify right side
    591,313.80x = 347,480,437,419.18
  5. Step 5: Solve for x
    x = 347,480,437,419.18/591,313.80
  6. Step 6: Final answer
    x = 587,641.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.