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Finding the Fourth Proportional to 664,407.60, 996,611.40 and 243,628.80

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Solution

The fourth proportional to 664,407.60, 996,611.40 and 243,628.80 is: 365,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,407.60 : 996,611.40 = 243,628.80 : x
  2. Step 2: Convert to fraction form
    664,407.60/996,611.40 = 243,628.80/x
  3. Step 3: Cross multiply
    664,407.60x = 996,611.40 × 243,628.80
  4. Step 4: Simplify right side
    664,407.60x = 242,803,239,448.32
  5. Step 5: Solve for x
    x = 242,803,239,448.32/664,407.60
  6. Step 6: Final answer
    x = 365,443.20

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Similar ratio
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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.