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Finding the Fourth Proportional to 560,434.40, 839,728.20 and 323,363.60

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Solution

The fourth proportional to 560,434.40, 839,728.20 and 323,363.60 is: 484,512.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,434.40 : 839,728.20 = 323,363.60 : x
  2. Step 2: Convert to fraction form
    560,434.40/839,728.20 = 323,363.60/x
  3. Step 3: Cross multiply
    560,434.40x = 839,728.20 × 323,363.60
  4. Step 4: Simplify right side
    560,434.40x = 271,537,533,773.52
  5. Step 5: Solve for x
    x = 271,537,533,773.52/560,434.40
  6. Step 6: Final answer
    x = 484,512.61

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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.