Home / 687,775.05-949,189.59-381,910.95

Finding the Fourth Proportional to 687,775.05, 949,189.59 and 381,910.95

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Solution

The fourth proportional to 687,775.05, 949,189.59 and 381,910.95 is: 527,070.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,775.05 : 949,189.59 = 381,910.95 : x
  2. Step 2: Convert to fraction form
    687,775.05/949,189.59 = 381,910.95/x
  3. Step 3: Cross multiply
    687,775.05x = 949,189.59 × 381,910.95
  4. Step 4: Simplify right side
    687,775.05x = 362,505,898,047.01
  5. Step 5: Solve for x
    x = 362,505,898,047.01/687,775.05
  6. Step 6: Final answer
    x = 527,070.44

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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.