Home / 621,712.20-931,877.10-266,665.80

Finding the Fourth Proportional to 621,712.20, 931,877.10 and 266,665.80

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Solution

The fourth proportional to 621,712.20, 931,877.10 and 266,665.80 is: 399,702.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,712.20 : 931,877.10 = 266,665.80 : x
  2. Step 2: Convert to fraction form
    621,712.20/931,877.10 = 266,665.80/x
  3. Step 3: Cross multiply
    621,712.20x = 931,877.10 × 266,665.80
  4. Step 4: Simplify right side
    621,712.20x = 248,499,752,373.18
  5. Step 5: Solve for x
    x = 248,499,752,373.18/621,712.20
  6. Step 6: Final answer
    x = 399,702.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.