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Finding the Fourth Proportional to 578,043.40, 867,048.90 and 262,499.80

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Solution

The fourth proportional to 578,043.40, 867,048.90 and 262,499.80 is: 393,742.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,043.40 : 867,048.90 = 262,499.80 : x
  2. Step 2: Convert to fraction form
    578,043.40/867,048.90 = 262,499.80/x
  3. Step 3: Cross multiply
    578,043.40x = 867,048.90 × 262,499.80
  4. Step 4: Simplify right side
    578,043.40x = 227,600,162,840.22
  5. Step 5: Solve for x
    x = 227,600,162,840.22/578,043.40
  6. Step 6: Final answer
    x = 393,742.34

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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.