Home / 1,758,905.70-2,638,358.55-1,398,099.30

Finding the Fourth Proportional to 1,758,905.70, 2,638,358.55 and 1,398,099.30

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Solution

The fourth proportional to 1,758,905.70, 2,638,358.55 and 1,398,099.30 is: 2,097,148.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758,905.70 : 2,638,358.55 = 1,398,099.30 : x
  2. Step 2: Convert to fraction form
    1,758,905.70/2,638,358.55 = 1,398,099.30/x
  3. Step 3: Cross multiply
    1,758,905.70x = 2,638,358.55 × 1,398,099.30
  4. Step 4: Simplify right side
    1,758,905.70x = 3,688,687,241,904.01
  5. Step 5: Solve for x
    x = 3,688,687,241,904.01/1,758,905.70
  6. Step 6: Final answer
    x = 2,097,148.95

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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.