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Finding the Fourth Proportional to 432,800.40, 649,200.60 and 426,579.60

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Solution

The fourth proportional to 432,800.40, 649,200.60 and 426,579.60 is: 639,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,800.40 : 649,200.60 = 426,579.60 : x
  2. Step 2: Convert to fraction form
    432,800.40/649,200.60 = 426,579.60/x
  3. Step 3: Cross multiply
    432,800.40x = 649,200.60 × 426,579.60
  4. Step 4: Simplify right side
    432,800.40x = 276,935,732,267.76
  5. Step 5: Solve for x
    x = 276,935,732,267.76/432,800.40
  6. Step 6: Final answer
    x = 639,869.40

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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.