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Finding the Fourth Proportional to 665,269.20, 997,903.80 and 399,848.40

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Solution

The fourth proportional to 665,269.20, 997,903.80 and 399,848.40 is: 599,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,269.20 : 997,903.80 = 399,848.40 : x
  2. Step 2: Convert to fraction form
    665,269.20/997,903.80 = 399,848.40/x
  3. Step 3: Cross multiply
    665,269.20x = 997,903.80 × 399,848.40
  4. Step 4: Simplify right side
    665,269.20x = 399,010,237,783.92
  5. Step 5: Solve for x
    x = 399,010,237,783.92/665,269.20
  6. Step 6: Final answer
    x = 599,772.60

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Similar ratio
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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.