Home / 1,235,917.80-1,853,876.70-438,100.20

Finding the Fourth Proportional to 1,235,917.80, 1,853,876.70 and 438,100.20

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Solution

The fourth proportional to 1,235,917.80, 1,853,876.70 and 438,100.20 is: 657,150.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235,917.80 : 1,853,876.70 = 438,100.20 : x
  2. Step 2: Convert to fraction form
    1,235,917.80/1,853,876.70 = 438,100.20/x
  3. Step 3: Cross multiply
    1,235,917.80x = 1,853,876.70 × 438,100.20
  4. Step 4: Simplify right side
    1,235,917.80x = 812,183,753,045.34
  5. Step 5: Solve for x
    x = 812,183,753,045.34/1,235,917.80
  6. Step 6: Final answer
    x = 657,150.30

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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.