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Finding the Fourth Proportional to 704,772.80, 1,057,159.20 and 424,836.80

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Solution

The fourth proportional to 704,772.80, 1,057,159.20 and 424,836.80 is: 637,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,772.80 : 1,057,159.20 = 424,836.80 : x
  2. Step 2: Convert to fraction form
    704,772.80/1,057,159.20 = 424,836.80/x
  3. Step 3: Cross multiply
    704,772.80x = 1,057,159.20 × 424,836.80
  4. Step 4: Simplify right side
    704,772.80x = 449,120,131,618.56
  5. Step 5: Solve for x
    x = 449,120,131,618.56/704,772.80
  6. Step 6: Final answer
    x = 637,255.20

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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.