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Finding the Fourth Proportional to 644,662.80, 966,994.20 and 549,277.20

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Solution

The fourth proportional to 644,662.80, 966,994.20 and 549,277.20 is: 823,915.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,662.80 : 966,994.20 = 549,277.20 : x
  2. Step 2: Convert to fraction form
    644,662.80/966,994.20 = 549,277.20/x
  3. Step 3: Cross multiply
    644,662.80x = 966,994.20 × 549,277.20
  4. Step 4: Simplify right side
    644,662.80x = 531,147,866,592.24
  5. Step 5: Solve for x
    x = 531,147,866,592.24/644,662.80
  6. Step 6: Final answer
    x = 823,915.80

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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.