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Finding the Fourth Proportional to 554,558.15, 765,325.67 and 312,752.49

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Solution

The fourth proportional to 554,558.15, 765,325.67 and 312,752.49 is: 431,618.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,558.15 : 765,325.67 = 312,752.49 : x
  2. Step 2: Convert to fraction form
    554,558.15/765,325.67 = 312,752.49/x
  3. Step 3: Cross multiply
    554,558.15x = 765,325.67 × 312,752.49
  4. Step 4: Simplify right side
    554,558.15x = 239,357,509,735.30
  5. Step 5: Solve for x
    x = 239,357,509,735.30/554,558.15
  6. Step 6: Final answer
    x = 431,618.42

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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.