Home / 1,638,205.50-2,457,142.20-439,972.14

Finding the Fourth Proportional to 1,638,205.50, 2,457,142.20 and 439,972.14

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Solution

The fourth proportional to 1,638,205.50, 2,457,142.20 and 439,972.14 is: 659,913.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,205.50 : 2,457,142.20 = 439,972.14 : x
  2. Step 2: Convert to fraction form
    1,638,205.50/2,457,142.20 = 439,972.14/x
  3. Step 3: Cross multiply
    1,638,205.50x = 2,457,142.20 × 439,972.14
  4. Step 4: Simplify right side
    1,638,205.50x = 1,081,074,112,018.31
  5. Step 5: Solve for x
    x = 1,081,074,112,018.31/1,638,205.50
  6. Step 6: Final answer
    x = 659,913.61

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Double scale
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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.