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Finding the Fourth Proportional to 497,998.70, 687,240.34 and 271,649.06

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Solution

The fourth proportional to 497,998.70, 687,240.34 and 271,649.06 is: 374,876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,998.70 : 687,240.34 = 271,649.06 : x
  2. Step 2: Convert to fraction form
    497,998.70/687,240.34 = 271,649.06/x
  3. Step 3: Cross multiply
    497,998.70x = 687,240.34 × 271,649.06
  4. Step 4: Simplify right side
    497,998.70x = 186,688,192,355.08
  5. Step 5: Solve for x
    x = 186,688,192,355.08/497,998.70
  6. Step 6: Final answer
    x = 374,876.87

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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.