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Finding the Fourth Proportional to 489,875.45, 675,981.46 and 274,966.25

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Solution

The fourth proportional to 489,875.45, 675,981.46 and 274,966.25 is: 379,427.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,875.45 : 675,981.46 = 274,966.25 : x
  2. Step 2: Convert to fraction form
    489,875.45/675,981.46 = 274,966.25/x
  3. Step 3: Cross multiply
    489,875.45x = 675,981.46 × 274,966.25
  4. Step 4: Simplify right side
    489,875.45x = 185,872,087,125.73
  5. Step 5: Solve for x
    x = 185,872,087,125.73/489,875.45
  6. Step 6: Final answer
    x = 379,427.23

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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.