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Finding the Fourth Proportional to 486,555.66, 671,445.45 and 271,695.87

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Solution

The fourth proportional to 486,555.66, 671,445.45 and 271,695.87 is: 374,939.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,555.66 : 671,445.45 = 271,695.87 : x
  2. Step 2: Convert to fraction form
    486,555.66/671,445.45 = 271,695.87/x
  3. Step 3: Cross multiply
    486,555.66x = 671,445.45 × 271,695.87
  4. Step 4: Simplify right side
    486,555.66x = 182,428,955,695.29
  5. Step 5: Solve for x
    x = 182,428,955,695.29/486,555.66
  6. Step 6: Final answer
    x = 374,939.54

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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.