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Finding the Fourth Proportional to 554,455.80, 830,517.30 and 461,143.80

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Solution

The fourth proportional to 554,455.80, 830,517.30 and 461,143.80 is: 690,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,455.80 : 830,517.30 = 461,143.80 : x
  2. Step 2: Convert to fraction form
    554,455.80/830,517.30 = 461,143.80/x
  3. Step 3: Cross multiply
    554,455.80x = 830,517.30 × 461,143.80
  4. Step 4: Simplify right side
    554,455.80x = 382,987,903,687.74
  5. Step 5: Solve for x
    x = 382,987,903,687.74/554,455.80
  6. Step 6: Final answer
    x = 690,745.60

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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.