Home / 860,171.81-1,187,038.49-478,198.60

Finding the Fourth Proportional to 860,171.81, 1,187,038.49 and 478,198.60

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Solution

The fourth proportional to 860,171.81, 1,187,038.49 and 478,198.60 is: 659,914.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,171.81 : 1,187,038.49 = 478,198.60 : x
  2. Step 2: Convert to fraction form
    860,171.81/1,187,038.49 = 478,198.60/x
  3. Step 3: Cross multiply
    860,171.81x = 1,187,038.49 × 478,198.60
  4. Step 4: Simplify right side
    860,171.81x = 567,640,138,705.53
  5. Step 5: Solve for x
    x = 567,640,138,705.53/860,171.81
  6. Step 6: Final answer
    x = 659,914.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.