Home / 1,240,812.20-1,861,218.30-342,392.60

Finding the Fourth Proportional to 1,240,812.20, 1,861,218.30 and 342,392.60

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Solution

The fourth proportional to 1,240,812.20, 1,861,218.30 and 342,392.60 is: 513,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,812.20 : 1,861,218.30 = 342,392.60 : x
  2. Step 2: Convert to fraction form
    1,240,812.20/1,861,218.30 = 342,392.60/x
  3. Step 3: Cross multiply
    1,240,812.20x = 1,861,218.30 × 342,392.60
  4. Step 4: Simplify right side
    1,240,812.20x = 637,267,372,904.58
  5. Step 5: Solve for x
    x = 637,267,372,904.58/1,240,812.20
  6. Step 6: Final answer
    x = 513,588.90

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Double scale
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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.