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Finding the Fourth Proportional to 737,488.80, 1,105,455.60 and 421,264.80

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Solution

The fourth proportional to 737,488.80, 1,105,455.60 and 421,264.80 is: 631,453.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,488.80 : 1,105,455.60 = 421,264.80 : x
  2. Step 2: Convert to fraction form
    737,488.80/1,105,455.60 = 421,264.80/x
  3. Step 3: Cross multiply
    737,488.80x = 1,105,455.60 × 421,264.80
  4. Step 4: Simplify right side
    737,488.80x = 465,689,532,242.88
  5. Step 5: Solve for x
    x = 465,689,532,242.88/737,488.80
  6. Step 6: Final answer
    x = 631,453.02

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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.