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Finding the Fourth Proportional to 701,200.80, 967,658.40 and 399,394.80

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Solution

The fourth proportional to 701,200.80, 967,658.40 and 399,394.80 is: 551,165.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,200.80 : 967,658.40 = 399,394.80 : x
  2. Step 2: Convert to fraction form
    701,200.80/967,658.40 = 399,394.80/x
  3. Step 3: Cross multiply
    701,200.80x = 967,658.40 × 399,394.80
  4. Step 4: Simplify right side
    701,200.80x = 386,477,733,136.32
  5. Step 5: Solve for x
    x = 386,477,733,136.32/701,200.80
  6. Step 6: Final answer
    x = 551,165.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.