Home / 668,986.40-1,003,609.20-289,906.40

Finding the Fourth Proportional to 668,986.40, 1,003,609.20 and 289,906.40

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Solution

The fourth proportional to 668,986.40, 1,003,609.20 and 289,906.40 is: 434,915.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,986.40 : 1,003,609.20 = 289,906.40 : x
  2. Step 2: Convert to fraction form
    668,986.40/1,003,609.20 = 289,906.40/x
  3. Step 3: Cross multiply
    668,986.40x = 1,003,609.20 × 289,906.40
  4. Step 4: Simplify right side
    668,986.40x = 290,952,730,178.88
  5. Step 5: Solve for x
    x = 290,952,730,178.88/668,986.40
  6. Step 6: Final answer
    x = 434,915.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.