Home / 432,811.40-649,217.10-426,590.60

Finding the Fourth Proportional to 432,811.40, 649,217.10 and 426,590.60

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Solution

The fourth proportional to 432,811.40, 649,217.10 and 426,590.60 is: 639,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,811.40 : 649,217.10 = 426,590.60 : x
  2. Step 2: Convert to fraction form
    432,811.40/649,217.10 = 426,590.60/x
  3. Step 3: Cross multiply
    432,811.40x = 649,217.10 × 426,590.60
  4. Step 4: Simplify right side
    432,811.40x = 276,949,912,219.26
  5. Step 5: Solve for x
    x = 276,949,912,219.26/432,811.40
  6. Step 6: Final answer
    x = 639,885.90

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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.