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Finding the Fourth Proportional to 673,538.68, 929,478.81 and 371,732.68

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Solution

The fourth proportional to 673,538.68, 929,478.81 and 371,732.68 is: 512,988.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,538.68 : 929,478.81 = 371,732.68 : x
  2. Step 2: Convert to fraction form
    673,538.68/929,478.81 = 371,732.68/x
  3. Step 3: Cross multiply
    673,538.68x = 929,478.81 × 371,732.68
  4. Step 4: Simplify right side
    673,538.68x = 345,517,649,044.51
  5. Step 5: Solve for x
    x = 345,517,649,044.51/673,538.68
  6. Step 6: Final answer
    x = 512,988.58

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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.