Home / 486,000.90-670,680.24-271,128.15

Finding the Fourth Proportional to 486,000.90, 670,680.24 and 271,128.15

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Solution

The fourth proportional to 486,000.90, 670,680.24 and 271,128.15 is: 374,156.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,000.90 : 670,680.24 = 271,128.15 : x
  2. Step 2: Convert to fraction form
    486,000.90/670,680.24 = 271,128.15/x
  3. Step 3: Cross multiply
    486,000.90x = 670,680.24 × 271,128.15
  4. Step 4: Simplify right side
    486,000.90x = 181,840,292,712.76
  5. Step 5: Solve for x
    x = 181,840,292,712.76/486,000.90
  6. Step 6: Final answer
    x = 374,156.29

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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.