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Finding the Fourth Proportional to 758,870, 1,138,349.54 and 285,559.44

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Solution

The fourth proportional to 758,870, 1,138,349.54 and 285,559.44 is: 428,355.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,870 : 1,138,349.54 = 285,559.44 : x
  2. Step 2: Convert to fraction form
    758,870/1,138,349.54 = 285,559.44/x
  3. Step 3: Cross multiply
    758,870x = 1,138,349.54 × 285,559.44
  4. Step 4: Simplify right side
    758,870x = 325,066,457,166.66
  5. Step 5: Solve for x
    x = 325,066,457,166.66/758,870
  6. Step 6: Final answer
    x = 428,355.92

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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.