Home / 712,158.46-982,778.60-389,867.56

Finding the Fourth Proportional to 712,158.46, 982,778.60 and 389,867.56

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Solution

The fourth proportional to 712,158.46, 982,778.60 and 389,867.56 is: 538,017.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,158.46 : 982,778.60 = 389,867.56 : x
  2. Step 2: Convert to fraction form
    712,158.46/982,778.60 = 389,867.56/x
  3. Step 3: Cross multiply
    712,158.46x = 982,778.60 × 389,867.56
  4. Step 4: Simplify right side
    712,158.46x = 383,153,494,802.22
  5. Step 5: Solve for x
    x = 383,153,494,802.22/712,158.46
  6. Step 6: Final answer
    x = 538,017.19

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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.