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Finding the Fourth Proportional to 673,719, 929,732.22 and 371,915.16

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Solution

The fourth proportional to 673,719, 929,732.22 and 371,915.16 is: 513,242.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,719 : 929,732.22 = 371,915.16 : x
  2. Step 2: Convert to fraction form
    673,719/929,732.22 = 371,915.16/x
  3. Step 3: Cross multiply
    673,719x = 929,732.22 × 371,915.16
  4. Step 4: Simplify right side
    673,719x = 345,781,507,358.46
  5. Step 5: Solve for x
    x = 345,781,507,358.46/673,719
  6. Step 6: Final answer
    x = 513,242.92

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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.