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Finding the Fourth Proportional to 664,429.40, 996,644.10 and 660,492.80

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Solution

The fourth proportional to 664,429.40, 996,644.10 and 660,492.80 is: 990,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,429.40 : 996,644.10 = 660,492.80 : x
  2. Step 2: Convert to fraction form
    664,429.40/996,644.10 = 660,492.80/x
  3. Step 3: Cross multiply
    664,429.40x = 996,644.10 × 660,492.80
  4. Step 4: Simplify right side
    664,429.40x = 658,276,252,212.48
  5. Step 5: Solve for x
    x = 658,276,252,212.48/664,429.40
  6. Step 6: Final answer
    x = 990,739.20

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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.