Home / 489,816.15-675,885.05-271,995.21

Finding the Fourth Proportional to 489,816.15, 675,885.05 and 271,995.21

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Solution

The fourth proportional to 489,816.15, 675,885.05 and 271,995.21 is: 375,319.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,816.15 : 675,885.05 = 271,995.21 : x
  2. Step 2: Convert to fraction form
    489,816.15/675,885.05 = 271,995.21/x
  3. Step 3: Cross multiply
    489,816.15x = 675,885.05 × 271,995.21
  4. Step 4: Simplify right side
    489,816.15x = 183,837,494,750.63
  5. Step 5: Solve for x
    x = 183,837,494,750.63/489,816.15
  6. Step 6: Final answer
    x = 375,319.38

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Double scale
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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.