Home / 1,149,439.78-1,586,276.10-640,142.15

Finding the Fourth Proportional to 1,149,439.78, 1,586,276.10 and 640,142.15

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Solution

The fourth proportional to 1,149,439.78, 1,586,276.10 and 640,142.15 is: 883,423.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149,439.78 : 1,586,276.10 = 640,142.15 : x
  2. Step 2: Convert to fraction form
    1,149,439.78/1,586,276.10 = 640,142.15/x
  3. Step 3: Cross multiply
    1,149,439.78x = 1,586,276.10 × 640,142.15
  4. Step 4: Simplify right side
    1,149,439.78x = 1,015,442,193,147.62
  5. Step 5: Solve for x
    x = 1,015,442,193,147.62/1,149,439.78
  6. Step 6: Final answer
    x = 883,423.57

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Double scale
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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.