Home / 1,265,866.70-1,898,966.90-412,639.40

Finding the Fourth Proportional to 1,265,866.70, 1,898,966.90 and 412,639.40

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Solution

The fourth proportional to 1,265,866.70, 1,898,966.90 and 412,639.40 is: 619,013.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,866.70 : 1,898,966.90 = 412,639.40 : x
  2. Step 2: Convert to fraction form
    1,265,866.70/1,898,966.90 = 412,639.40/x
  3. Step 3: Cross multiply
    1,265,866.70x = 1,898,966.90 × 412,639.40
  4. Step 4: Simplify right side
    1,265,866.70x = 783,588,562,235.86
  5. Step 5: Solve for x
    x = 783,588,562,235.86/1,265,866.70
  6. Step 6: Final answer
    x = 619,013.49

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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.