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Finding the Fourth Proportional to 554,901.84, 765,765.90 and 300,255.66

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Solution

The fourth proportional to 554,901.84, 765,765.90 and 300,255.66 is: 414,353.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,901.84 : 765,765.90 = 300,255.66 : x
  2. Step 2: Convert to fraction form
    554,901.84/765,765.90 = 300,255.66/x
  3. Step 3: Cross multiply
    554,901.84x = 765,765.90 × 300,255.66
  4. Step 4: Simplify right side
    554,901.84x = 229,925,545,709.99
  5. Step 5: Solve for x
    x = 229,925,545,709.99/554,901.84
  6. Step 6: Final answer
    x = 414,353.55

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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.