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Finding the Fourth Proportional to 479,411.18, 718,929.83 and 179,728.40

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Solution

The fourth proportional to 479,411.18, 718,929.83 and 179,728.40 is: 269,522.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,411.18 : 718,929.83 = 179,728.40 : x
  2. Step 2: Convert to fraction form
    479,411.18/718,929.83 = 179,728.40/x
  3. Step 3: Cross multiply
    479,411.18x = 718,929.83 × 179,728.40
  4. Step 4: Simplify right side
    479,411.18x = 129,212,108,058.17
  5. Step 5: Solve for x
    x = 129,212,108,058.17/479,411.18
  6. Step 6: Final answer
    x = 269,522.52

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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.