Home / 712,222.44-982,867.95-389,934.78

Finding the Fourth Proportional to 712,222.44, 982,867.95 and 389,934.78

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Solution

The fourth proportional to 712,222.44, 982,867.95 and 389,934.78 is: 538,110.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,222.44 : 982,867.95 = 389,934.78 : x
  2. Step 2: Convert to fraction form
    712,222.44/982,867.95 = 389,934.78/x
  3. Step 3: Cross multiply
    712,222.44x = 982,867.95 × 389,934.78
  4. Step 4: Simplify right side
    712,222.44x = 383,254,397,852.30
  5. Step 5: Solve for x
    x = 383,254,397,852.30/712,222.44
  6. Step 6: Final answer
    x = 538,110.53

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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.