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Finding the Fourth Proportional to 645,037.80, 967,211.10 and 270,637.80

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Solution

The fourth proportional to 645,037.80, 967,211.10 and 270,637.80 is: 405,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,037.80 : 967,211.10 = 270,637.80 : x
  2. Step 2: Convert to fraction form
    645,037.80/967,211.10 = 270,637.80/x
  3. Step 3: Cross multiply
    645,037.80x = 967,211.10 × 270,637.80
  4. Step 4: Simplify right side
    645,037.80x = 261,763,884,239.58
  5. Step 5: Solve for x
    x = 261,763,884,239.58/645,037.80
  6. Step 6: Final answer
    x = 405,811.70

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1.5x scale

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.