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Finding the Fourth Proportional to 914,800, 1,262,424 and 557,104

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Solution

The fourth proportional to 914,800, 1,262,424 and 557,104 is: 768,803.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,800 : 1,262,424 = 557,104 : x
  2. Step 2: Convert to fraction form
    914,800/1,262,424 = 557,104/x
  3. Step 3: Cross multiply
    914,800x = 1,262,424 × 557,104
  4. Step 4: Simplify right side
    914,800x = 703,301,460,096
  5. Step 5: Solve for x
    x = 703,301,460,096/914,800
  6. Step 6: Final answer
    x = 768,803.52

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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.