Home / 642,777.02-886,939.14-356,297.06

Finding the Fourth Proportional to 642,777.02, 886,939.14 and 356,297.06

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Solution

The fourth proportional to 642,777.02, 886,939.14 and 356,297.06 is: 491,638.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,777.02 : 886,939.14 = 356,297.06 : x
  2. Step 2: Convert to fraction form
    642,777.02/886,939.14 = 356,297.06/x
  3. Step 3: Cross multiply
    642,777.02x = 886,939.14 × 356,297.06
  4. Step 4: Simplify right side
    642,777.02x = 316,013,807,980.93
  5. Step 5: Solve for x
    x = 316,013,807,980.93/642,777.02
  6. Step 6: Final answer
    x = 491,638.31

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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.