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Finding the Fourth Proportional to 512,638.80, 708,379.20 and 444,436.80

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Solution

The fourth proportional to 512,638.80, 708,379.20 and 444,436.80 is: 614,135.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,638.80 : 708,379.20 = 444,436.80 : x
  2. Step 2: Convert to fraction form
    512,638.80/708,379.20 = 444,436.80/x
  3. Step 3: Cross multiply
    512,638.80x = 708,379.20 × 444,436.80
  4. Step 4: Simplify right side
    512,638.80x = 314,829,784,834.56
  5. Step 5: Solve for x
    x = 314,829,784,834.56/512,638.80
  6. Step 6: Final answer
    x = 614,135.69

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1.5x scale

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.