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Finding the Fourth Proportional to 489,931.57, 676,105.57 and 275,076.25

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Solution

The fourth proportional to 489,931.57, 676,105.57 and 275,076.25 is: 379,605.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,931.57 : 676,105.57 = 275,076.25 : x
  2. Step 2: Convert to fraction form
    489,931.57/676,105.57 = 275,076.25/x
  3. Step 3: Cross multiply
    489,931.57x = 676,105.57 × 275,076.25
  4. Step 4: Simplify right side
    489,931.57x = 185,980,585,709.08
  5. Step 5: Solve for x
    x = 185,980,585,709.08/489,931.57
  6. Step 6: Final answer
    x = 379,605.23

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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.