Home / 489,815.28-675,944.76-274,955.76

Finding the Fourth Proportional to 489,815.28, 675,944.76 and 274,955.76

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Solution

The fourth proportional to 489,815.28, 675,944.76 and 274,955.76 is: 379,438.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,815.28 : 675,944.76 = 274,955.76 : x
  2. Step 2: Convert to fraction form
    489,815.28/675,944.76 = 274,955.76/x
  3. Step 3: Cross multiply
    489,815.28x = 675,944.76 × 274,955.76
  4. Step 4: Simplify right side
    489,815.28x = 185,854,905,203.82
  5. Step 5: Solve for x
    x = 185,854,905,203.82/489,815.28
  6. Step 6: Final answer
    x = 379,438.77

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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.