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Finding the Fourth Proportional to 554,967.63, 765,856 and 300,318.82

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Solution

The fourth proportional to 554,967.63, 765,856 and 300,318.82 is: 414,440.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,967.63 : 765,856 = 300,318.82 : x
  2. Step 2: Convert to fraction form
    554,967.63/765,856 = 300,318.82/x
  3. Step 3: Cross multiply
    554,967.63x = 765,856 × 300,318.82
  4. Step 4: Simplify right side
    554,967.63x = 230,000,970,209.92
  5. Step 5: Solve for x
    x = 230,000,970,209.92/554,967.63
  6. Step 6: Final answer
    x = 414,440.33

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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.