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Finding the Fourth Proportional to 644,666.40, 966,999.60 and 644,666.40

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Solution

The fourth proportional to 644,666.40, 966,999.60 and 644,666.40 is: 966,999.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,666.40 : 966,999.60 = 644,666.40 : x
  2. Step 2: Convert to fraction form
    644,666.40/966,999.60 = 644,666.40/x
  3. Step 3: Cross multiply
    644,666.40x = 966,999.60 × 644,666.40
  4. Step 4: Simplify right side
    644,666.40x = 623,392,150,933.44
  5. Step 5: Solve for x
    x = 623,392,150,933.44/644,666.40
  6. Step 6: Final answer
    x = 966,999.60

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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.