Home / 1,149,491-1,586,183.98-640,240.76

Finding the Fourth Proportional to 1,149,491, 1,586,183.98 and 640,240.76

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Solution

The fourth proportional to 1,149,491, 1,586,183.98 and 640,240.76 is: 883,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149,491 : 1,586,183.98 = 640,240.76 : x
  2. Step 2: Convert to fraction form
    1,149,491/1,586,183.98 = 640,240.76/x
  3. Step 3: Cross multiply
    1,149,491x = 1,586,183.98 × 640,240.76
  4. Step 4: Simplify right side
    1,149,491x = 1,015,539,636,855.02
  5. Step 5: Solve for x
    x = 1,015,539,636,855.02/1,149,491
  6. Step 6: Final answer
    x = 883,468.98

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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.