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Finding the Fourth Proportional to 554,626.38, 765,318.54 and 312,894.84

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Solution

The fourth proportional to 554,626.38, 765,318.54 and 312,894.84 is: 431,757.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,626.38 : 765,318.54 = 312,894.84 : x
  2. Step 2: Convert to fraction form
    554,626.38/765,318.54 = 312,894.84/x
  3. Step 3: Cross multiply
    554,626.38x = 765,318.54 × 312,894.84
  4. Step 4: Simplify right side
    554,626.38x = 239,464,222,122.33
  5. Step 5: Solve for x
    x = 239,464,222,122.33/554,626.38
  6. Step 6: Final answer
    x = 431,757.72

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1.5x scale

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.