Home / 712,043.21-982,621.08-389,773.89

Finding the Fourth Proportional to 712,043.21, 982,621.08 and 389,773.89

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Solution

The fourth proportional to 712,043.21, 982,621.08 and 389,773.89 is: 537,888.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,043.21 : 982,621.08 = 389,773.89 : x
  2. Step 2: Convert to fraction form
    712,043.21/982,621.08 = 389,773.89/x
  3. Step 3: Cross multiply
    712,043.21x = 982,621.08 × 389,773.89
  4. Step 4: Simplify right side
    712,043.21x = 383,000,040,747.60
  5. Step 5: Solve for x
    x = 383,000,040,747.60/712,043.21
  6. Step 6: Final answer
    x = 537,888.77

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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.