Home / 913,276.80-1,369,915.20-414,640.80

Finding the Fourth Proportional to 913,276.80, 1,369,915.20 and 414,640.80

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Solution

The fourth proportional to 913,276.80, 1,369,915.20 and 414,640.80 is: 621,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,276.80 : 1,369,915.20 = 414,640.80 : x
  2. Step 2: Convert to fraction form
    913,276.80/1,369,915.20 = 414,640.80/x
  3. Step 3: Cross multiply
    913,276.80x = 1,369,915.20 × 414,640.80
  4. Step 4: Simplify right side
    913,276.80x = 568,022,734,460.16
  5. Step 5: Solve for x
    x = 568,022,734,460.16/913,276.80
  6. Step 6: Final answer
    x = 621,961.20

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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.