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Finding the Fourth Proportional to 679,908.57, 938,296.85 and 374,007.69

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Solution

The fourth proportional to 679,908.57, 938,296.85 and 374,007.69 is: 516,143.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,908.57 : 938,296.85 = 374,007.69 : x
  2. Step 2: Convert to fraction form
    679,908.57/938,296.85 = 374,007.69/x
  3. Step 3: Cross multiply
    679,908.57x = 938,296.85 × 374,007.69
  4. Step 4: Simplify right side
    679,908.57x = 350,930,235,532.74
  5. Step 5: Solve for x
    x = 350,930,235,532.74/679,908.57
  6. Step 6: Final answer
    x = 516,143.27

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1.5x scale

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.