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Finding the Fourth Proportional to 679,898.67, 938,277.87 and 373,982.94

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Solution

The fourth proportional to 679,898.67, 938,277.87 and 373,982.94 is: 516,106.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,898.67 : 938,277.87 = 373,982.94 : x
  2. Step 2: Convert to fraction form
    679,898.67/938,277.87 = 373,982.94/x
  3. Step 3: Cross multiply
    679,898.67x = 938,277.87 × 373,982.94
  4. Step 4: Simplify right side
    679,898.67x = 350,899,916,359.54
  5. Step 5: Solve for x
    x = 350,899,916,359.54/679,898.67
  6. Step 6: Final answer
    x = 516,106.20

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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.