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Finding the Fourth Proportional to 578,064.40, 867,080.40 and 262,520.80

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Solution

The fourth proportional to 578,064.40, 867,080.40 and 262,520.80 is: 393,773.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,064.40 : 867,080.40 = 262,520.80 : x
  2. Step 2: Convert to fraction form
    578,064.40/867,080.40 = 262,520.80/x
  3. Step 3: Cross multiply
    578,064.40x = 867,080.40 × 262,520.80
  4. Step 4: Simplify right side
    578,064.40x = 227,626,640,272.32
  5. Step 5: Solve for x
    x = 227,626,640,272.32/578,064.40
  6. Step 6: Final answer
    x = 393,773.84

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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.