Home / 664,423.20-996,634.80-554,198.40

Finding the Fourth Proportional to 664,423.20, 996,634.80 and 554,198.40

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Solution

The fourth proportional to 664,423.20, 996,634.80 and 554,198.40 is: 831,297.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,423.20 : 996,634.80 = 554,198.40 : x
  2. Step 2: Convert to fraction form
    664,423.20/996,634.80 = 554,198.40/x
  3. Step 3: Cross multiply
    664,423.20x = 996,634.80 × 554,198.40
  4. Step 4: Simplify right side
    664,423.20x = 552,333,411,544.32
  5. Step 5: Solve for x
    x = 552,333,411,544.32/664,423.20
  6. Step 6: Final answer
    x = 831,297.60

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Similar ratio
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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.