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Finding the Fourth Proportional to 666,429.66, 999,031.20 and 362,379.60

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Solution

The fourth proportional to 666,429.66, 999,031.20 and 362,379.60 is: 543,235.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,429.66 : 999,031.20 = 362,379.60 : x
  2. Step 2: Convert to fraction form
    666,429.66/999,031.20 = 362,379.60/x
  3. Step 3: Cross multiply
    666,429.66x = 999,031.20 × 362,379.60
  4. Step 4: Simplify right side
    666,429.66x = 362,028,526,643.52
  5. Step 5: Solve for x
    x = 362,028,526,643.52/666,429.66
  6. Step 6: Final answer
    x = 543,235.92

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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.