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Finding the Fourth Proportional to 999,838.12, 1,379,776.50 and 547,129

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Solution

The fourth proportional to 999,838.12, 1,379,776.50 and 547,129 is: 755,037.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,838.12 : 1,379,776.50 = 547,129 : x
  2. Step 2: Convert to fraction form
    999,838.12/1,379,776.50 = 547,129/x
  3. Step 3: Cross multiply
    999,838.12x = 1,379,776.50 × 547,129
  4. Step 4: Simplify right side
    999,838.12x = 754,915,736,668.50
  5. Step 5: Solve for x
    x = 754,915,736,668.50/999,838.12
  6. Step 6: Final answer
    x = 755,037.96

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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.