Home / 432,821.40-649,232.10-426,600.60

Finding the Fourth Proportional to 432,821.40, 649,232.10 and 426,600.60

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Solution

The fourth proportional to 432,821.40, 649,232.10 and 426,600.60 is: 639,900.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,821.40 : 649,232.10 = 426,600.60 : x
  2. Step 2: Convert to fraction form
    432,821.40/649,232.10 = 426,600.60/x
  3. Step 3: Cross multiply
    432,821.40x = 649,232.10 × 426,600.60
  4. Step 4: Simplify right side
    432,821.40x = 276,962,803,399.26
  5. Step 5: Solve for x
    x = 276,962,803,399.26/432,821.40
  6. Step 6: Final answer
    x = 639,900.90

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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.