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Finding the Fourth Proportional to 628,400.80, 941,218.80 and 614,576.80

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Solution

The fourth proportional to 628,400.80, 941,218.80 and 614,576.80 is: 920,513.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,400.80 : 941,218.80 = 614,576.80 : x
  2. Step 2: Convert to fraction form
    628,400.80/941,218.80 = 614,576.80/x
  3. Step 3: Cross multiply
    628,400.80x = 941,218.80 × 614,576.80
  4. Step 4: Simplify right side
    628,400.80x = 578,451,238,203.84
  5. Step 5: Solve for x
    x = 578,451,238,203.84/628,400.80
  6. Step 6: Final answer
    x = 920,513.21

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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.