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Finding the Fourth Proportional to 559,655.89, 772,322.20 and 305,004.85

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Solution

The fourth proportional to 559,655.89, 772,322.20 and 305,004.85 is: 420,905.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,655.89 : 772,322.20 = 305,004.85 : x
  2. Step 2: Convert to fraction form
    559,655.89/772,322.20 = 305,004.85/x
  3. Step 3: Cross multiply
    559,655.89x = 772,322.20 × 305,004.85
  4. Step 4: Simplify right side
    559,655.89x = 235,562,014,069.35
  5. Step 5: Solve for x
    x = 235,562,014,069.35/559,655.89
  6. Step 6: Final answer
    x = 420,905.09

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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.