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Finding the Fourth Proportional to 449,573.01, 671,079.93 and 392,821.41

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Solution

The fourth proportional to 449,573.01, 671,079.93 and 392,821.41 is: 586,366.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,573.01 : 671,079.93 = 392,821.41 : x
  2. Step 2: Convert to fraction form
    449,573.01/671,079.93 = 392,821.41/x
  3. Step 3: Cross multiply
    449,573.01x = 671,079.93 × 392,821.41
  4. Step 4: Simplify right side
    449,573.01x = 263,614,564,325.30
  5. Step 5: Solve for x
    x = 263,614,564,325.30/449,573.01
  6. Step 6: Final answer
    x = 586,366.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.