Home / 916,946.80-1,375,420.20-285,855.60

Finding the Fourth Proportional to 916,946.80, 1,375,420.20 and 285,855.60

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Solution

The fourth proportional to 916,946.80, 1,375,420.20 and 285,855.60 is: 428,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,946.80 : 1,375,420.20 = 285,855.60 : x
  2. Step 2: Convert to fraction form
    916,946.80/1,375,420.20 = 285,855.60/x
  3. Step 3: Cross multiply
    916,946.80x = 1,375,420.20 × 285,855.60
  4. Step 4: Simplify right side
    916,946.80x = 393,171,566,523.12
  5. Step 5: Solve for x
    x = 393,171,566,523.12/916,946.80
  6. Step 6: Final answer
    x = 428,783.40

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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.