Home / 712,043.70-982,621.78-389,774.38

Finding the Fourth Proportional to 712,043.70, 982,621.78 and 389,774.38

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Solution

The fourth proportional to 712,043.70, 982,621.78 and 389,774.38 is: 537,889.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,043.70 : 982,621.78 = 389,774.38 : x
  2. Step 2: Convert to fraction form
    712,043.70/982,621.78 = 389,774.38/x
  3. Step 3: Cross multiply
    712,043.70x = 982,621.78 × 389,774.38
  4. Step 4: Simplify right side
    712,043.70x = 383,000,795,074.00
  5. Step 5: Solve for x
    x = 383,000,795,074.00/712,043.70
  6. Step 6: Final answer
    x = 537,889.45

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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.