Home / 1,265,865.70-1,898,965.40-412,638.40

Finding the Fourth Proportional to 1,265,865.70, 1,898,965.40 and 412,638.40

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Solution

The fourth proportional to 1,265,865.70, 1,898,965.40 and 412,638.40 is: 619,011.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,865.70 : 1,898,965.40 = 412,638.40 : x
  2. Step 2: Convert to fraction form
    1,265,865.70/1,898,965.40 = 412,638.40/x
  3. Step 3: Cross multiply
    1,265,865.70x = 1,898,965.40 × 412,638.40
  4. Step 4: Simplify right side
    1,265,865.70x = 783,586,044,311.36
  5. Step 5: Solve for x
    x = 783,586,044,311.36/1,265,865.70
  6. Step 6: Final answer
    x = 619,011.99

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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.