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Finding the Fourth Proportional to 644,538.80, 966,808.20 and 549,153.20

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Solution

The fourth proportional to 644,538.80, 966,808.20 and 549,153.20 is: 823,729.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,538.80 : 966,808.20 = 549,153.20 : x
  2. Step 2: Convert to fraction form
    644,538.80/966,808.20 = 549,153.20/x
  3. Step 3: Cross multiply
    644,538.80x = 966,808.20 × 549,153.20
  4. Step 4: Simplify right side
    644,538.80x = 530,925,816,816.24
  5. Step 5: Solve for x
    x = 530,925,816,816.24/644,538.80
  6. Step 6: Final answer
    x = 823,729.80

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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.