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Finding the Fourth Proportional to 644,495.60, 966,451.80 and 289,326.80

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Solution

The fourth proportional to 644,495.60, 966,451.80 and 289,326.80 is: 433,859.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,495.60 : 966,451.80 = 289,326.80 : x
  2. Step 2: Convert to fraction form
    644,495.60/966,451.80 = 289,326.80/x
  3. Step 3: Cross multiply
    644,495.60x = 966,451.80 × 289,326.80
  4. Step 4: Simplify right side
    644,495.60x = 279,620,406,648.24
  5. Step 5: Solve for x
    x = 279,620,406,648.24/644,495.60
  6. Step 6: Final answer
    x = 433,859.30

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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.