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Finding the Fourth Proportional to 555,073, 765,999.30 and 300,424.12

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Solution

The fourth proportional to 555,073, 765,999.30 and 300,424.12 is: 414,584.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,073 : 765,999.30 = 300,424.12 : x
  2. Step 2: Convert to fraction form
    555,073/765,999.30 = 300,424.12/x
  3. Step 3: Cross multiply
    555,073x = 765,999.30 × 300,424.12
  4. Step 4: Simplify right side
    555,073x = 230,124,665,623.12
  5. Step 5: Solve for x
    x = 230,124,665,623.12/555,073
  6. Step 6: Final answer
    x = 414,584.51

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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.