Home / 712,104.71-982,704.42-389,815.02

Finding the Fourth Proportional to 712,104.71, 982,704.42 and 389,815.02

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Solution

The fourth proportional to 712,104.71, 982,704.42 and 389,815.02 is: 537,944.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,104.71 : 982,704.42 = 389,815.02 : x
  2. Step 2: Convert to fraction form
    712,104.71/982,704.42 = 389,815.02/x
  3. Step 3: Cross multiply
    712,104.71x = 982,704.42 × 389,815.02
  4. Step 4: Simplify right side
    712,104.71x = 383,072,943,136.39
  5. Step 5: Solve for x
    x = 383,072,943,136.39/712,104.71
  6. Step 6: Final answer
    x = 537,944.68

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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.