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Finding the Fourth Proportional to 664,698.40, 997,047.60 and 620,083.60

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Solution

The fourth proportional to 664,698.40, 997,047.60 and 620,083.60 is: 930,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,698.40 : 997,047.60 = 620,083.60 : x
  2. Step 2: Convert to fraction form
    664,698.40/997,047.60 = 620,083.60/x
  3. Step 3: Cross multiply
    664,698.40x = 997,047.60 × 620,083.60
  4. Step 4: Simplify right side
    664,698.40x = 618,252,865,179.36
  5. Step 5: Solve for x
    x = 618,252,865,179.36/664,698.40
  6. Step 6: Final answer
    x = 930,125.40

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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.