Home / 669,990.80-1,004,986.20-371,392.40

Finding the Fourth Proportional to 669,990.80, 1,004,986.20 and 371,392.40

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Solution

The fourth proportional to 669,990.80, 1,004,986.20 and 371,392.40 is: 557,088.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,990.80 : 1,004,986.20 = 371,392.40 : x
  2. Step 2: Convert to fraction form
    669,990.80/1,004,986.20 = 371,392.40/x
  3. Step 3: Cross multiply
    669,990.80x = 1,004,986.20 × 371,392.40
  4. Step 4: Simplify right side
    669,990.80x = 373,244,236,784.88
  5. Step 5: Solve for x
    x = 373,244,236,784.88/669,990.80
  6. Step 6: Final answer
    x = 557,088.60

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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.