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Finding the Fourth Proportional to 399,607.24, 598,894.18 and 298,977.90

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Solution

The fourth proportional to 399,607.24, 598,894.18 and 298,977.90 is: 448,080.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,607.24 : 598,894.18 = 298,977.90 : x
  2. Step 2: Convert to fraction form
    399,607.24/598,894.18 = 298,977.90/x
  3. Step 3: Cross multiply
    399,607.24x = 598,894.18 × 298,977.90
  4. Step 4: Simplify right side
    399,607.24x = 179,056,125,474.98
  5. Step 5: Solve for x
    x = 179,056,125,474.98/399,607.24
  6. Step 6: Final answer
    x = 448,080.28

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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.