Home / 687,974.88-949,387.20-382,041.84

Finding the Fourth Proportional to 687,974.88, 949,387.20 and 382,041.84

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Solution

The fourth proportional to 687,974.88, 949,387.20 and 382,041.84 is: 527,207.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,974.88 : 949,387.20 = 382,041.84 : x
  2. Step 2: Convert to fraction form
    687,974.88/949,387.20 = 382,041.84/x
  3. Step 3: Cross multiply
    687,974.88x = 949,387.20 × 382,041.84
  4. Step 4: Simplify right side
    687,974.88x = 362,705,632,760.45
  5. Step 5: Solve for x
    x = 362,705,632,760.45/687,974.88
  6. Step 6: Final answer
    x = 527,207.67

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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.