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Finding the Fourth Proportional to 443,585.90, 664,903.70 and 316,841.76

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Solution

The fourth proportional to 443,585.90, 664,903.70 and 316,841.76 is: 474,923.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,585.90 : 664,903.70 = 316,841.76 : x
  2. Step 2: Convert to fraction form
    443,585.90/664,903.70 = 316,841.76/x
  3. Step 3: Cross multiply
    443,585.90x = 664,903.70 × 316,841.76
  4. Step 4: Simplify right side
    443,585.90x = 210,669,253,629.79
  5. Step 5: Solve for x
    x = 210,669,253,629.79/443,585.90
  6. Step 6: Final answer
    x = 474,923.25

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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.