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Finding the Fourth Proportional to 560,408.88, 773,366.76 and 305,765.40

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Solution

The fourth proportional to 560,408.88, 773,366.76 and 305,765.40 is: 421,957.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,408.88 : 773,366.76 = 305,765.40 : x
  2. Step 2: Convert to fraction form
    560,408.88/773,366.76 = 305,765.40/x
  3. Step 3: Cross multiply
    560,408.88x = 773,366.76 × 305,765.40
  4. Step 4: Simplify right side
    560,408.88x = 236,468,796,718.10
  5. Step 5: Solve for x
    x = 236,468,796,718.10/560,408.88
  6. Step 6: Final answer
    x = 421,957.62

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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.