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Finding the Fourth Proportional to 559,406.40, 839,765.70 and 555,469.80

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Solution

The fourth proportional to 559,406.40, 839,765.70 and 555,469.80 is: 833,856.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,406.40 : 839,765.70 = 555,469.80 : x
  2. Step 2: Convert to fraction form
    559,406.40/839,765.70 = 555,469.80/x
  3. Step 3: Cross multiply
    559,406.40x = 839,765.70 × 555,469.80
  4. Step 4: Simplify right side
    559,406.40x = 466,464,485,425.86
  5. Step 5: Solve for x
    x = 466,464,485,425.86/559,406.40
  6. Step 6: Final answer
    x = 833,856.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.