Home / 419,662,532.40-629,541,037.80-128,527,342.80

Finding the Fourth Proportional to 419,662,532.40, 629,541,037.80 and 128,527,342.80

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Solution

The fourth proportional to 419,662,532.40, 629,541,037.80 and 128,527,342.80 is: 192,805,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,662,532.40 : 629,541,037.80 = 128,527,342.80 : x
  2. Step 2: Convert to fraction form
    419,662,532.40/629,541,037.80 = 128,527,342.80/x
  3. Step 3: Cross multiply
    419,662,532.40x = 629,541,037.80 × 128,527,342.80
  4. Step 4: Simplify right side
    419,662,532.40x = 80,913,236,771,988,352
  5. Step 5: Solve for x
    x = 80,913,236,771,988,352/419,662,532.40
  6. Step 6: Final answer
    x = 192,805,481.85

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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.