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Finding the Fourth Proportional to 469,306.85, 647,595.51 and 288,026.42

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Solution

The fourth proportional to 469,306.85, 647,595.51 and 288,026.42 is: 397,447.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,306.85 : 647,595.51 = 288,026.42 : x
  2. Step 2: Convert to fraction form
    469,306.85/647,595.51 = 288,026.42/x
  3. Step 3: Cross multiply
    469,306.85x = 647,595.51 × 288,026.42
  4. Step 4: Simplify right side
    469,306.85x = 186,524,612,035.30
  5. Step 5: Solve for x
    x = 186,524,612,035.30/469,306.85
  6. Step 6: Final answer
    x = 397,447.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.