Home / 860,187.40-1,289,843.70-505,310.20

Finding the Fourth Proportional to 860,187.40, 1,289,843.70 and 505,310.20

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Solution

The fourth proportional to 860,187.40, 1,289,843.70 and 505,310.20 is: 757,708.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,187.40 : 1,289,843.70 = 505,310.20 : x
  2. Step 2: Convert to fraction form
    860,187.40/1,289,843.70 = 505,310.20/x
  3. Step 3: Cross multiply
    860,187.40x = 1,289,843.70 × 505,310.20
  4. Step 4: Simplify right side
    860,187.40x = 651,771,178,015.74
  5. Step 5: Solve for x
    x = 651,771,178,015.74/860,187.40
  6. Step 6: Final answer
    x = 757,708.35

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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.