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Finding the Fourth Proportional to 476,770.38, 715,780.62 and 319,701.66

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Solution

The fourth proportional to 476,770.38, 715,780.62 and 319,701.66 is: 479,971.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,770.38 : 715,780.62 = 319,701.66 : x
  2. Step 2: Convert to fraction form
    476,770.38/715,780.62 = 319,701.66/x
  3. Step 3: Cross multiply
    476,770.38x = 715,780.62 × 319,701.66
  4. Step 4: Simplify right side
    476,770.38x = 228,836,252,409.83
  5. Step 5: Solve for x
    x = 228,836,252,409.83/476,770.38
  6. Step 6: Final answer
    x = 479,971.62

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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.