Home / 642,531.99-886,699.43-356,056.86

Finding the Fourth Proportional to 642,531.99, 886,699.43 and 356,056.86

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Solution

The fourth proportional to 642,531.99, 886,699.43 and 356,056.86 is: 491,361.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,531.99 : 886,699.43 = 356,056.86 : x
  2. Step 2: Convert to fraction form
    642,531.99/886,699.43 = 356,056.86/x
  3. Step 3: Cross multiply
    642,531.99x = 886,699.43 × 356,056.86
  4. Step 4: Simplify right side
    642,531.99x = 315,715,413,029.31
  5. Step 5: Solve for x
    x = 315,715,413,029.31/642,531.99
  6. Step 6: Final answer
    x = 491,361.39

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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.