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Finding the Fourth Proportional to 674,176.60, 930,363.78 and 372,370.60

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Solution

The fourth proportional to 674,176.60, 930,363.78 and 372,370.60 is: 513,871.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,176.60 : 930,363.78 = 372,370.60 : x
  2. Step 2: Convert to fraction form
    674,176.60/930,363.78 = 372,370.60/x
  3. Step 3: Cross multiply
    674,176.60x = 930,363.78 × 372,370.60
  4. Step 4: Simplify right side
    674,176.60x = 346,440,118,976.87
  5. Step 5: Solve for x
    x = 346,440,118,976.87/674,176.60
  6. Step 6: Final answer
    x = 513,871.47

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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.