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Finding the Fourth Proportional to 578,288.85, 867,729.78 and 279,024.63

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Solution

The fourth proportional to 578,288.85, 867,729.78 and 279,024.63 is: 418,680.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,288.85 : 867,729.78 = 279,024.63 : x
  2. Step 2: Convert to fraction form
    578,288.85/867,729.78 = 279,024.63/x
  3. Step 3: Cross multiply
    578,288.85x = 867,729.78 × 279,024.63
  4. Step 4: Simplify right side
    578,288.85x = 242,117,980,804.48
  5. Step 5: Solve for x
    x = 242,117,980,804.48/578,288.85
  6. Step 6: Final answer
    x = 418,680.01

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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.